1
|
Taverna JA, Hung CN, Williams M, Williams R, Chen M, Kamali S, Sambandam V, Hsiang-Ling Chiu C, Osmulski PA, Gaczynska ME, DeArmond DT, Gaspard C, Mancini M, Kusi M, Pandya AN, Song L, Jin L, Schiavini P, Chen CL. Ex vivo drug testing of patient-derived lung organoids to predict treatment responses for personalized medicine. Lung Cancer 2024; 190:107533. [PMID: 38520909 DOI: 10.1016/j.lungcan.2024.107533] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Revised: 03/06/2024] [Accepted: 03/07/2024] [Indexed: 03/25/2024]
Abstract
Lung cancer is the leading cause of global cancer-related mortality resulting in ∼ 1.8 million deaths annually. Systemic, molecular targeted, and immune therapies have provided significant improvements of survival outcomes for patients. However, drug resistance usually arises and there is an urgent need for novel therapy screening and personalized medicine. 3D patient-derived organoid (PDO) models have emerged as a more effective and efficient alternative for ex vivo drug screening than 2D cell culture and patient-derived xenograft (PDX) models. In this review, we performed an extensive search of lung cancer PDO-based ex vivo drug screening studies. Lung cancer PDOs were successfully established from fresh or bio-banked sections and/or biopsies, pleural effusions and PDX mouse models. PDOs were subject to ex vivo drug screening with chemotherapy, targeted therapy and/or immunotherapy. PDOs consistently recapitulated the genomic alterations and drug sensitivity of primary tumors. Although sample sizes of the previous studies were limited and some technical challenges remain, PDOs showed great promise in the screening of novel therapy drugs. With the technical advances of high throughput, tumor-on-chip, and combined microenvironment, the drug screening process using PDOs will enhance precision care of lung cancer patients.
Collapse
Affiliation(s)
- Josephine A Taverna
- Department of Molecular Medicine, University of Texas Health Science Center, San Antonio, TX, USA; Mays Cancer Center, University of Texas Health Science Center, San Antonio, TX, USA; Department of Medicine, Division of Hematology and Oncology, University of Texas Health Science Center, San Antonio, TX, USA.
| | - Chia-Nung Hung
- Department of Molecular Medicine, University of Texas Health Science Center, San Antonio, TX, USA
| | - Madison Williams
- Mays Cancer Center, University of Texas Health Science Center, San Antonio, TX, USA; Department of Medicine, Division of Hematology and Oncology, University of Texas Health Science Center, San Antonio, TX, USA; Department of General Oncology, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Ryan Williams
- Mays Cancer Center, University of Texas Health Science Center, San Antonio, TX, USA; Department of Medicine, Division of Hematology and Oncology, University of Texas Health Science Center, San Antonio, TX, USA; Department of General Oncology, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Meizhen Chen
- Department of Molecular Medicine, University of Texas Health Science Center, San Antonio, TX, USA
| | | | | | - Cheryl Hsiang-Ling Chiu
- Department of Molecular Medicine, University of Texas Health Science Center, San Antonio, TX, USA
| | - Pawel A Osmulski
- Department of Molecular Medicine, University of Texas Health Science Center, San Antonio, TX, USA
| | - Maria E Gaczynska
- Department of Molecular Medicine, University of Texas Health Science Center, San Antonio, TX, USA
| | - Daniel T DeArmond
- Department of Medicine, Division of Hematology and Oncology, University of Texas Health Science Center, San Antonio, TX, USA; Department of General Oncology, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA; Department of Cardiothoracic Surgery, University of Texas Health Science Center, San Antonio, Texas and Department of Laboratory Medicine, Baptist Health System, San Antonio, TX, USA
| | - Christine Gaspard
- Dolph Briscoe, Jr. Library, University of Texas Health Science Center, San Antonio, TX, USA
| | | | - Meena Kusi
- Deciphera Pharmaceuticals, LLC., Waltham, MA, USA
| | - Abhishek N Pandya
- Department of Medicine, Division of Hematology and Oncology, University of Texas Health Science Center, San Antonio, TX, USA
| | - Lina Song
- Department of Molecular Medicine, University of Texas Health Science Center, San Antonio, TX, USA
| | - Lingtao Jin
- Department of Molecular Medicine, University of Texas Health Science Center, San Antonio, TX, USA
| | | | - Chun-Liang Chen
- Department of Molecular Medicine, University of Texas Health Science Center, San Antonio, TX, USA; Mays Cancer Center, University of Texas Health Science Center, San Antonio, TX, USA; School of Nursing, University of Texas Health Science Center, San Antonio, TX, USA.
| |
Collapse
|
2
|
Moote R, Kennedy A, Ratcliffe T, Gaspard C, Leach ER, Vives M, Zorek JA. Clinical Interprofessional Education in Inpatient Pharmacy: Findings From a Secondary Analysis of a Scoping Review. Am J Pharm Educ 2024; 88:100617. [PMID: 37923143 DOI: 10.1016/j.ajpe.2023.100617] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Revised: 10/25/2023] [Accepted: 10/26/2023] [Indexed: 11/07/2023]
Abstract
OBJECTIVES Clinical interprofessional education (IPE) is defined as learning that occurs within clinical learning environments such as hospitals, primary care clinics, and long-term care facilities where learners collaborate to deliver care to real patients. The objective of this secondary analysis of a scoping review is to identify, characterize, and summarize evidence from the published literature regarding clinical IPE for pharmacy learners in the inpatient setting. FINDINGS PubMed, CINAHL, and Scopus databases were searched for clinical IPE articles that met the following inclusion criteria: ≥ 2 health professions, ≥ 2 learner groups, and involvement of real patients/patient care. For this secondary analysis, 12 articles involving pharmacy learners in an inpatient setting were included. The most common interprofessional partner was medicine (66%), and the median number of student participants involved in the activity was 19 (range, 10-525). Five studies conducted clinical IPE in the context of advanced pharmacy practice experiences. Clinical IPE activities were described primarily as inpatient rounding with the medical team, but were often outside the normal clinical workflow (66%). Incorporation of Interprofessional Education Collaborative competencies was limited, as was the use of validated IPE assessment tools to measure outcomes. SUMMARY Current literature is limited in reports of pharmacy learner involvement in inpatient clinical IPE. Expansion of pharmacy partnerships and alignment of team outcomes with the Interprofessional Education Collaborative competencies are needed to demonstrate the relationship between clinical IPE and patient care outcomes within established workflows.
Collapse
Affiliation(s)
- Rebecca Moote
- University of Texas at Austin, College of Pharmacy, Austin, TX, USA; University of Texas Health Science Center at San Antonio, Office of the Vice President for Academic, Faculty & Student Affairs, Linking Interprofessional Networks for Collaboration, San Antonio, TX, USA.
| | - Angela Kennedy
- University of Texas Health Science Center at San Antonio, Office of the Vice President for Academic, Faculty & Student Affairs, Linking Interprofessional Networks for Collaboration, San Antonio, TX, USA; University of Texas Health Science Center at San Antonio, School of Health Professions, San Antonio, TX, USA
| | - Temple Ratcliffe
- University of Texas Health Science Center at San Antonio, Office of the Vice President for Academic, Faculty & Student Affairs, Linking Interprofessional Networks for Collaboration, San Antonio, TX, USA; University of Texas Health Science Center at San Antonio, Joe R. and Teresa Lozano Long School of Medicine, San Antonio, TX, USA
| | - Christine Gaspard
- University of Texas Health Science Center at San Antonio, Office of the Vice President for Academic, Faculty & Student Affairs, Linking Interprofessional Networks for Collaboration, San Antonio, TX, USA; University of Texas Health Science Center at San Antonio, Dolph Briscoe Jr. Library, San Antonio, TX, USA
| | - Elena Riccio Leach
- University of Texas Health Science Center at San Antonio, Office of the Vice President for Academic, Faculty & Student Affairs, Linking Interprofessional Networks for Collaboration, San Antonio, TX, USA; University of Texas Health Science Center at San Antonio, School of Dentistry, San Antonio, TX, USA
| | - Marta Vives
- University of Texas Health Science Center at San Antonio, Office of the Vice President for Academic, Faculty & Student Affairs, Linking Interprofessional Networks for Collaboration, San Antonio, TX, USA; University of Texas Health Science Center at San Antonio, School of Nursing, San Antonio, TX, USA
| | - Joseph A Zorek
- University of Texas Health Science Center at San Antonio, Office of the Vice President for Academic, Faculty & Student Affairs, Linking Interprofessional Networks for Collaboration, San Antonio, TX, USA; University of Texas Health Science Center at San Antonio, School of Nursing, San Antonio, TX, USA
| |
Collapse
|
3
|
Moote R, Ratcliffe T, Gaspard C, Kennedy A, Leach ER, Vives M, Zorek JA. Clinical interprofessional education in the health professions: a scoping review protocol. JBI Evid Synth 2021; 20:931-943. [PMID: 34768256 DOI: 10.11124/jbies-21-00207] [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: 10/31/2022]
Abstract
OBJECTIVE The objective of this scoping review is to identify, characterize, and summarize evidence from the published literature on clinical interprofessional education. INTRODUCTION Clinical interprofessional education refers to learning within clinical learning environments such as hospitals, primary care clinics, and long-term care facilities. The learning involves direct interaction with real patients, where learners collaborate to deliver care and improve health outcomes. INCLUSION CRITERIA This scoping review will consider clinical interprofessional education activities in the context of patient care. Criteria include two or more health professions, two or more learner groups, and involvement of real patients/patient care. METHODS This review will be conducted in accordance with the JBI methodology for scoping reviews. Databases searched will include PubMed, CINAHL, and Scopus. Results will be limited to English language publications from 2015 to the present. Extracted data will include the different types of clinical learning environments, the professions involved, the targeted learning/competency outcomes, and the measurement tools used by the authors. Titles/abstracts and full texts of articles will be screened by two reviewers for potential inclusion, with discrepancies resolved by a third reviewer if necessary. Extracted data will be presented in diagrammatic or tabular format. A narrative summary will accompany the tabulated and/or charted results, describing how the results relate to the review objective and research questions, and how the results might inform future clinical interprofessional education in health professions education.
Collapse
Affiliation(s)
- Rebecca Moote
- College of Pharmacy, University of Texas at Austin, Austin, Texas, USA Joe R. and Teresa Lozano Long School of Medicine, University of Texas Health Science Center at San Antonio, San Antonio, Texas, USA Briscoe Library, University of Texas Health Science Center at San Antonio, San Antonio, Texas, USA School of Health Professions, University of Texas Health Science Center at San Antonio, San Antonio, Texas, USA School of Dentistry, University of Texas Health Science Center at San Antonio, San Antonio, Texas, USA School of Nursing, University of Texas Health Science Center at San Antonio, San Antonio, Texas, USA Linking Interprofessional Networks for Collaboration, Office of the Vice President for Academic, Faculty and Student Affairs, University of Texas Health Science Center at San Antonio, San Antonio, Texas, USA
| | | | | | | | | | | | | |
Collapse
|
4
|
Zorek JA, Lacy J, Gaspard C, Najjar G, Eickhoff J, Ragucci KR. Leveraging the Interprofessional Education Collaborative Competency Framework to Transform Health Professions Education. Am J Pharm Educ 2021; 85:8602. [PMID: 34301561 PMCID: PMC8499667 DOI: 10.5688/ajpe8602] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Accepted: 05/20/2021] [Indexed: 06/13/2023]
Affiliation(s)
- Joseph A Zorek
- University of Texas Health Science Center at San Antonio, Office of the Vice President for Academic, Faculty & Student Affairs, San Antonio, Texas
- University of Texas Health Science Center at San Antonio, School of Nursing, San Antonio, Texas
| | - Jeff Lacy
- University of Texas Health Science Center at San Antonio, Briscoe Library, San Antonio, Texas
| | - Christine Gaspard
- University of Texas Health Science Center at San Antonio, Briscoe Library, San Antonio, Texas
| | - Ghaidaa Najjar
- University of Michigan Center for Interprofessional Education, Ann Arbor, Michigan
| | - Jens Eickhoff
- University of Wisconsin-Madison, School of Medicine and Public Health, Madison, Wisconsin
| | - Kelly R Ragucci
- American Association of Colleges of Pharmacy, Arlington, Virginia
| |
Collapse
|
5
|
|
6
|
Bolt P, Batazzi D, Belfiore N, Gaspard C, Goiset L, Laugier M, Lemaire O, Matthews D, Mul S, Nylén T, Reuver K, Stocchi D, Stork F, Tensen J, Tornicelli M, Valle R, van den Elzen E, Vergne C, Williams I. Damage resistance and roughness retention of work rolls in cold rolling mills. ACTA ACUST UNITED AC 2010. [DOI: 10.1051/metal/2010026] [Citation(s) in RCA: 6] [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: 11/14/2022]
|
7
|
Fau C, Billaud G, Pinchinat S, Lina B, Kaplon J, Pothier P, Derrough T, Marcelon L, Largeron N, Caulin E, Bellemin B, Cao Nong T, Gaspard C, Mamoux V, Floret D. [Epidemiology and burden of rotavirus diarrhea in day care centers in Lyon, France]. Arch Pediatr 2008; 15:1183-92. [PMID: 18456480 DOI: 10.1016/j.arcped.2008.02.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2008] [Accepted: 02/23/2008] [Indexed: 11/26/2022]
Abstract
Rotavirus is the main cause of severe, dehydrating diarrhoea in infants and young children. In industrialized countries, pediatric rotavirus gastroenteritis (PRGE) is responsible for high morbidity, particularly among children under 3 years of age attending day care centers (DCCs). The objectives of this study were to estimate the incidence, management and cost of PRGE in DCCs. We also described the nature of group A rotavirus genotypes. This study also compared the performance of different diagnostic techniques. The study was conducted from November 2004 to May 2005. Children aged less than 36 months, attending a participating DCC at least 4 times a week were included in the study. For any episode of acute gastroenteritis (AGE), defined as the occurrence of 3 or more watery or looser than normal stools and/or forceful vomiting within a 24 h period, a fecal specimen was tested by Elisa test IDEIA Rotavirus (Dako) and the immunochromatographic test VIKIA Rota-Adeno (BioMérieux). Sequencing by RT-PCR was performed to identify the rotavirus genotype. Among the 41 DCCs contacted, 18 (43.9%) agreed to participate. Out of 966 children, 547 attended a participating DCC at least 4 times a week and met the inclusion criteria. A total of 302 were included in the study. The clinical diagnosis of AGE was confirmed and validated, by the Elisa test, in 63 fecal specimens, of which 29 (46%) were positive for rotavirus antigen, with a predominance of P[8]G9 (86%). Our results showed good sensitivity and specificity for the VIKIA and Elisa methods when compared to RT-PCR. Among the PRGE cases, 36% were male and the median age was 12.2 months. The first rotavirus case was observed in December 2004 with a peak in January 2005. The incidence of PRGE cases was 2.2 [1.4-3.0] per 100 child-months in children aged less than 36 months of age, increasing to 3.4 per 100 child-months among children aged less than 24 months. Vomiting (P<0.0005) and behavior modification (P<0.001) were significantly more frequent for PRGE cases. A total of 85.7% PRGE cases sought medical attention. In 58.3% of these cases, at least one parent had to miss work for a mean duration of 2.1 days. The total cost of rotavirus cases seeking medical attention (with or without prescribed medication, days off work for parents or additional diaper consumption) was estimated at 275.54 euros/case. The PRGE incidence rate is similar to that estimated in European studies conducted in DDC. These findings confirm that rotavirus transmission occurs not only in DCCs but within the family. This is the first study to give an estimate of the incidence and the cost of rotavirus infection in DCCs in France.
Collapse
Affiliation(s)
- C Fau
- Médecins référents des crèches municipales de la ville de Lyon, France
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
8
|
Reignier F, Romanò L, Thiry N, Beutels P, Van Damme P, Fau C, Gaspard C, Mamoux V, Zanetti A, Floret D. [Varicella-zoster virus seroprevalence in nursery and day-care workers in Lyon (France)]. Med Mal Infect 2005; 35:192-6. [PMID: 15914287 DOI: 10.1016/j.medmal.2005.01.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2004] [Accepted: 01/31/2005] [Indexed: 10/25/2022]
Abstract
OBJECTIVE Varicella is a potential occupational hazard for susceptible individuals working in pediatric institutions because infected adults run a greater risk of severe or even fatal varicella and because the disease is so common in children and so contagious. The seroprevalence of varicella-zoster virus (VZV) was examined in a sample of day-care workers in Lyon (France) to determine whether a targeted vaccination policy was needed. METHODS Two hundred forty-one sera were sampled and analysed with an Elisa test between March and May 2001. Histories of past VZV infection were collected via questionnaires documented either before or after consultation of medical records or other sources of information. RESULTS The overall VZV seroprevalence was 99.6%. The positive predictive values of past varicella histories (documented or not) were>99% showing that a history of previous varicella in day-care workers was reliable. However, only 68 to 71% of these with serologically confirmed varicella reported a prior history of varicella. All subjects reporting a non-positive history of varicella were seropositive. CONCLUSIONS Virtually all day-care workers enrolled in this study presented serological evidence of VZV so that sub-populations at risk for varicella infection for which VZV vaccination may be effective could not be identified. However, the VZV seroprevalence of the workers in pediatric institutions being presumably higher than that of the general adult population (94-96.3%), vaccination of susceptible young recruits before any exposure to the VZV, or even vaccination of students willing to work in a pediatric institution, may be positive.
Collapse
Affiliation(s)
- F Reignier
- Direction prévention santé enfance, Marie de Lyon, place de la Comédie, 69001 Lyon, France
| | | | | | | | | | | | | | | | | | | |
Collapse
|
9
|
Campanella S, Gaspard C, Debatisse D, Bruyer R, Crommelinck M, Guerit JM. Discrimination of emotional facial expressions in a visual oddball task: an ERP study. Biol Psychol 2002; 59:171-86. [PMID: 12009560 DOI: 10.1016/s0301-0511(02)00005-4] [Citation(s) in RCA: 119] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Several ERP studies have shown an orienting complex, the N2/P3a, associated to the detection of stimulus novelty. Its role consists in preparing the organism to process and react to biologically prepotent stimuli. Whether this N2/P3a: (1) could be obtained with complex visual stimuli, such as with emotional facial expressions; and (2) could take part in a complex discrimination process has yet to be determined. To investigate this issue, event-related potentials were recorded in response to repetitions of a particular facial expression (e.g. sadness) and in response to two different deviant (rare) stimuli, one depicting the same emotion as the frequent stimulus, while the other depicted a different facial expression (e.g. fear). As expected, deviant stimuli evoked an N2/P3a complex of larger amplitude than frequent stimuli. But more interestingly, when the deviant stimulus depicted the same emotion as the frequent stimulus the N2/P3a was delayed compared to the response elicited by the different-emotion deviant. The N2/P3a was thus implicated in the detection of physical facial changes, with a higher sensitivity to changes related to a new different emotional content, perhaps leading to faster adaptive reactions.
Collapse
Affiliation(s)
- S Campanella
- Unité de Neurosciences Cognitives (NESC), Faculte de Psychologie, Université Catholique de Louvain, Place du Cardinal Mercier 10, B-1348, Louvain-la-Neuve, Belgium.
| | | | | | | | | | | |
Collapse
|
10
|
Langlois N, Rojas-Rousseau A, Gaspard C, Werner GH, Darro F, Kiss R. Synthesis and cytotoxicity on sensitive and doxorubicin-resistant cell lines of new pyrrolo[2,1-c][1,4]benzodiazepines related to anthramycin. J Med Chem 2001; 44:3754-7. [PMID: 11606141 DOI: 10.1021/jm010937q] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A new 7,8-methylenedioxy analogue (4) of (+)-porothramycin B (2) and its water-soluble sodium bisulfite derivative (15) have been synthesized in high yields and have been shown to exhibit high cytotoxic activities against several tumor cell lines. The new pyrrolo[2,1-c][1,4]benzodiazepine 4 was as effective against the resistant cell lines as against the doxorubicin-sensitive cell lines tested.
Collapse
Affiliation(s)
- N Langlois
- Institut de Chimie des Substances Naturelles, CNRS, 91198 Gif-sur-Yvette, France.
| | | | | | | | | | | |
Collapse
|
11
|
Bertrand M, Poissonnet G, Théret-Bettiol MH, Gaspard C, Werner GH, Pfeiffer B, Renard P, Léonce S, Dodd RH. Cytotoxic activities of novel hexahydroindolizino[8,7-b]indole derivatives prepared by 1,3-dipolar cycloaddition reactions of 3,4-dihydro-beta-carboline ylides. Bioorg Med Chem 2001; 9:2155-64. [PMID: 11504652 DOI: 10.1016/s0968-0896(01)00119-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
A series of 1-cyano and 2-cyanohexahydroindolizino[8,7-b]indole derivatives was prepared by 1,3-dipolar cycloaddition of acrylonitrile with ylides derived from 3,4-dihydro-beta-carboline and its 6-methoxy, 6-benzyloxy, 9-methyl and 9-benzyl analogues. The products, together with their reduced 1- or 2-aminomethyl derivatives, were evaluated for cytotoxic activity in L1210 cancer cells. Compounds derived from 6-benzyloxy or 9-benzyl-3,4-dihydro-beta-carboline were found to be the most active, with IC(50)'s in the 2-50 microM range. Of these, two compounds, the 1- and 2-cyano 8-benzyloxyindolizino[8,7-b]indole derivatives 20a and 20c, respectively, were found by cytometric flux analysis to stop cancer cell growth at the G(2)M and 8N (>G(2)M) stage of the cell cycle. These two compounds also showed no loss of cytotoxic activity in K562R cancer cells resistant to doxorubicin.
Collapse
Affiliation(s)
- M Bertrand
- Institut de Chimie des Substances Naturelles, Centre National de la Recherche Scientifique, Gif-sur-Yvette Cedex, France
| | | | | | | | | | | | | | | | | |
Collapse
|
12
|
Arzel E, Rocca P, Grellier P, Labaeïd M, Frappier F, Guéritte F, Gaspard C, Marsais F, Godard A, Quéguiner G. New synthesis of benzo-delta-carbolines, cryptolepines, and their salts: in vitro cytotoxic, antiplasmodial, and antitrypanosomal activities of delta-carbolines, benzo-delta-carbolines, and cryptolepines. J Med Chem 2001; 44:949-60. [PMID: 11300877 DOI: 10.1021/jm0010419] [Citation(s) in RCA: 129] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The paper describes, in its first part, a new synthesis of benzo-delta-carbolines, cryptolepines, and their salts. The strategy is based on the association between halogen-dance and hetero-ring cross-coupling. It is fully convergent and regioselective with interesting overall yields from 27% to 70%. A halogen-dance mechanism in quinoline series is also proposed. The formal synthesis of potential antimalarial compounds and the first total synthesis of 11-isopropylcryptolepine are also described. In the second part, cytotoxic activity against mammalian cells and activities against Plasmodium falciparum and Trypanosoma cruzi of benzo-delta-carbolines and delta-carbolines were evaluated in vitro to study the structure-activity relationships. For benzo-delta-carbolines, methylation at N-5 increases the cytotoxic and antiparasitic activities. A further alkylation on C-11 generally increases the cytotoxic activity but not the antiparasitic activity, cryptolepine and 11-methylcryptolepine being the most active on both parasites. Taking advantage of the fluorescence of the indoloquinoline chromophore, cryptolepine was localized by fluorescence microscopy in parasite DNA-containing structures suggesting that these compounds act through interaction with parasite DNA as proposed for cryptolepine on melanoma cells. For delta-carbolines, methylation at N-1 is essential for the antimalarial activity. 1-Methyl-delta-carboline specifically accumulates in the intracellular parasite. It has weak cytotoxic activity and can be considered as a potential antimalarial compound.
Collapse
Affiliation(s)
- E Arzel
- Institut National des Sciences Appliquées, UMR 6014, BP 08, 76131 Mont-Saint-Aignan Cedex, France
| | | | | | | | | | | | | | | | | | | |
Collapse
|
13
|
|
14
|
Abstract
Gossypol, gossypolone, reduced gossypol and new Schiff's bases of racemic gossypol and gossypolone were extracted or synthesized. Their cytotoxic activities on KB human cancer cells were determined. Gossypolone and the ethylamine derivative of gossypolone were the most active compounds (IC(50) in the micromolar range in both cases). The cytotoxicity of gossypol and gossypolone was increased when the tests were performed in the absence of serum and decreased when catalase as well as mannitol were added to the culture medium.
Collapse
Affiliation(s)
- V T Dao
- Institut de chimie des substances naturelles, CNRS, 91198, Gif sur Yvette, France
| | | | | | | | | | | |
Collapse
|
15
|
|
16
|
Guillot B, Gaspard C, Baldet P, Dandurand M. [Skin leiomyosarcomas and Epstein-Barr virus]. Ann Dermatol Venereol 2000; 127:411. [PMID: 10939986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
|
17
|
Stoebner PE, Gaspard C, Meynadier J, Meunier L. Tongue necrosis provoked by ergotamine tartrate and disclosing a giant cell arteritis. Eur J Dermatol 1999; 9:652-3. [PMID: 10586137] [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: 02/14/2023]
Abstract
A case of tongue necrosis induced by ergotamine tartrate is reported in a patient who was suffering from an unknown giant cell arteritis (GCA). The role of ergotamine in provoking tongue necrosis in temporal arteritis has only infrequently been considered. The hypothesis concerning ergotamine-induced vasospasm potentially being able to trigger a tongue necrosis in GCA is supported by the present case. This unusual complication warns us against uncritical prescription of this drug for elderly people suffering from migraine without considering GCA.
Collapse
Affiliation(s)
- P E Stoebner
- Department of Dermatology-Allergology-Photobiology. St-Eloi Hospital, University of Montpellier, 2, avenue Bertin-Sans, 34295 Montpellier, France
| | | | | | | |
Collapse
|
18
|
Mohamad K, Martin MT, Najdar H, Gaspard C, Sévenet T, Awang K, Hadi H, Païs M. Cytotoxic 3,4-secoapotirucallanes from Aaglaia argentea bark. J Nat Prod 1999; 62:868-872. [PMID: 10395505 DOI: 10.1021/np990013u] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Nine 3,4-secoapotirucallanes, argentinic acids A-I, were isolated from the bark of Aglaia argentea and transformed to their methyl esters 1-9. The structures were determined by spectral and chemical means. Compounds 1-8 showed moderate cytotoxic activity against KB cells (IC50 1.0-3.5 microg/mL).
Collapse
Affiliation(s)
- K Mohamad
- Institut de Chimie des Substances Naturelles, C.N.R.S., 91198 Gif-sur-Yvette Cedex, France
| | | | | | | | | | | | | | | |
Collapse
|
19
|
Polge A, Gaspard C, Mottet N, Guitton C, Boyer JC, Choquet A, Combettes S, Bancel E, Costa P, Bali JP. Neurohormonal stimulation of histamine release from neuroendocrine cells of the human adenomatous prostate. Prostate 1998; 34:1-9. [PMID: 9428382 DOI: 10.1002/(sici)1097-0045(19980101)34:1<1::aid-pros1>3.0.co;2-p] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
BACKGROUND Neuroendocrine cells (NE) constitute a population of highly specialized cells in prostatic glands; histamine has never been described in these cells. This article shows the presence and the regulation of release of histamine in NE. METHODS In 21 prostatic adenomas, NE were identified by specific antisera against neuroendocrine markers (chromogranin-A, synaptophysin), histamine, and histidine decarboxylase (HDC); a rate HDC-cDNA probe was used to detect this enzyme by in situ hybridization. RESULTS Immunoreactive cells for chromogranin-A, histamine, and HDC were found among luminal epithelial glandular cells. Similar cells were also labeled with the HDC-cDNA probe. Glandular cells, isolated from prostatic adenomas, were shown to contain histamine (7-40 pmol/mg cellular protein). L(-) norepinephrine causes a time-dependent (t1/2 = 22 min) histamine release; the alpha 1-receptor antagonists WB-4101 and YM-617 specifically inhibited this release, in agreement with a mediation by alpha 1-adrenoreceptor subtype. CONCLUSIONS There is some evidence for the presence in prostatic adenomas of histamine-forming cells of neuroendocrine type; histamine release from these cells is under the control of alpha 1-adrenoreceptor subtype.
Collapse
Affiliation(s)
- A Polge
- Unité Fonctionnelle d'Exploration de la Fibre Lisse, CHU Carémeau, Nimes, France
| | | | | | | | | | | | | | | | | | | |
Collapse
|