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Joy R. An evaluation of the xenobotic cognitive project: Towards Stage 1 of xenobotic cognition. Endeavour 2024:100927. [PMID: 38679490 DOI: 10.1016/j.endeavour.2024.100927] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 10/30/2023] [Accepted: 04/22/2024] [Indexed: 05/01/2024]
Abstract
Xenobot, the world's first biological robot, puts numerous philosophical riddles before us. One among them pertains to the cognitive status of these entities. Are these biological robots cognitive? To evaluate the cognitive status of xenobots and to resolve the puzzle of a single mind emerging from smaller sub-units, in this article, I juxtapose the cognitive capacities of xenobots with that of two other minimal models of cognition, i.e., basal cognition and nonliving active matter cognition. Further, the article underlines the essential cognitive capabilities that xenobots need to achieve to enter what I call stage 1 of xenobotic cognition. Stage 1 is characterized by numerous cognitive mechanisms, which are integral for the survival and cognition of basal organisms. Finally, I suggest that developing xenobots that can reach Stage 1 can help us achieve sophistication in the areas of evolution of the human mind, robotics, biology and medicine, and artificial intelligence (AI).
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Affiliation(s)
- Reshma Joy
- Indian Institute of Technology Ropar, India.
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Joy R, Phair K, O'Hara R, Brady D. Recent advances and current challenges in CAR-T cell therapy. Biotechnol Lett 2024; 46:115-126. [PMID: 38150098 DOI: 10.1007/s10529-023-03461-0] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 11/30/2023] [Accepted: 12/14/2023] [Indexed: 12/28/2023]
Abstract
Rapid advancements in the field of immunotherapy have significantly improved cancer treatments. Specifically, an individualized cell-based modality which involves the removal of some of the patient's own white blood cells, including T cells, has revolutionized research in this field. This study focuses on the recent advances and current challenges of Chimeric Antigen Receptor- T (CAR-T) cell therapy and its regulations in the United States (US) and European Union (EU). Understanding the regulatory regimes of CAR-T cell therapy is critical for researchers and manufacturers as they navigate the hurdles of bringing CAR-T cell therapy to the global market. Benefits of CAR-T cell therapy include high response rates and the potential of long-term remissions in some haematological malignancies. However, the drawbacks are still evident including high costs, adverse reactions, and limited efficacy to solid tumours. CAR-T cell therapy is rapidly advancing, with 1231 clinical trials launched globally according to www.clinicalTrial.gov . The future of CAR-T cell therapy holds enormous promise but improving its safety, effectiveness, and availability are still barriers to its successful implementation.
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Affiliation(s)
- R Joy
- EnviroCORE, Department of Applied Science, South East Technological University, SETU Carlow, Kilkenny Road, Carlow, R93V960, Ireland
| | - K Phair
- EnviroCORE, Department of Applied Science, South East Technological University, SETU Carlow, Kilkenny Road, Carlow, R93V960, Ireland
| | - R O'Hara
- EnviroCORE, Department of Applied Science, South East Technological University, SETU Carlow, Kilkenny Road, Carlow, R93V960, Ireland
| | - D Brady
- EnviroCORE, Department of Applied Science, South East Technological University, SETU Carlow, Kilkenny Road, Carlow, R93V960, Ireland.
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3
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Prabhu DJ, Ray U, Rajeev A, Joy R, George AT, George J, Raghavan SC, John F. Correction to "Design and Synthesis of Ketenimine Sulfonamide Conjugates through Multicomponent Reactions; A Combined Cytotoxic Analysis and Computational Exploration". ACS Omega 2023; 8:47315. [PMID: 38107917 PMCID: PMC10720288 DOI: 10.1021/acsomega.3c08691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Indexed: 12/19/2023]
Abstract
[This corrects the article DOI: 10.1021/acsomega.3c05816.].
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Joy R, Siddiqua H, Sharma S, Raveendran M, John F, Hassan P, Gawali SL, Raghavan SC, George J. Block Copolymer Encapsulation of Disarib, an Inhibitor of BCL2 for Improved Chemotherapeutic Potential. ACS Omega 2023; 8:40729-40740. [PMID: 37929147 PMCID: PMC10621013 DOI: 10.1021/acsomega.3c05802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 10/06/2023] [Accepted: 10/09/2023] [Indexed: 11/07/2023]
Abstract
A chemical inhibitor of antiapoptotic protein, BCL2, known as Disarib, suffers poor solubility in aqueous environments; thereby limiting its potential as a chemotherapeutic agent. To overcome this limitation and enhance the therapeutic efficacy of Disarib, we have employed the encapsulation of this small molecule inhibitor within P123 copolymer matrix. Micelles were synthesized using a thin-film hydration technique, and a comprehensive analysis was undertaken to evaluate the resulting micelle properties, including morphology, particle size, intermolecular interactions, encapsulation efficiency, and in vitro release characteristics. This assessment utilized various physicochemical techniques including UV spectroscopy, FTIR spectroscopy, dynamic light scattering (DLS), transmission electron microscopy (TEM), and small-angle X-ray scattering (SAXS). Disarib-loaded P123 micelle formulation denoted as P123D exhibited a well-defined particle size of approximately 29.2 nm spherical core-shell morphology. Our investigations revealed a notable encapsulation efficiency of 75%, and we observed a biphasic release pattern for the encapsulated Disarib. Furthermore, our cytotoxicity assessment of P123D micelles against mouse breast adenocarcinoma, mouse lymphoma, and human leukemic cell lines showed 40-45% increase in cytotoxicity compared with the administration of Disarib alone in the breast adenocarcinoma cell line. Enhancement in the cytotoxicity of P123D was found to be higher or limited; however, it is important to observe that the encapsulation method significantly enhanced the aqueous solubility of Disarib as it has the best solubility in dimethyl sulfoxide (DMSO) in the unencapsulated state.
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Affiliation(s)
- Reshma Joy
- Bio-organic
Laboratory, Department of Chemistry, Sacred
Heart College, Kochi 682013, India
| | - Humaira Siddiqua
- Department
of Biochemistry, Indian Institute of Science, Bangalore 560012, India
| | - Shivangi Sharma
- Department
of Biochemistry, Indian Institute of Science, Bangalore 560012, India
| | - Manthra Raveendran
- Department
of Biochemistry, Indian Institute of Science, Bangalore 560012, India
| | - Franklin John
- Bio-organic
Laboratory, Department of Chemistry, Sacred
Heart College, Kochi 682013, India
| | | | - Santosh L Gawali
- Chemistry
Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - Sathees C. Raghavan
- Department
of Biochemistry, Indian Institute of Science, Bangalore 560012, India
| | - Jinu George
- Bio-organic
Laboratory, Department of Chemistry, Sacred
Heart College, Kochi 682013, India
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Prabhu D, Ray U, Rajeev A, Joy R, George AT, George J, Raghavan SC, John F. Design and Synthesis of Ketenimine Sulfonamide Conjugates through Multicomponent Reactions; A Combined Cytotoxic Analysis and Computational Exploration. ACS Omega 2023; 8:38619-38631. [PMID: 37867708 PMCID: PMC10586297 DOI: 10.1021/acsomega.3c05816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 09/25/2023] [Indexed: 10/24/2023]
Abstract
Multicomponent reactions involving zwitterion generated from dimethyl acetylenedicarboxylate, aryl sulfonamide, and isocyanide to generate sulfonamide-conjugated ketenimines is reported. The synthetic strategy adopted is highly atom economical and stereoselective. Ketenimine sulfonamide analogues are key intermediates for further synthetic conversions to generate a combinatorial library of compounds. Furthermore, sulfonamide compounds are known to possess a broad spectrum of biological applications. All the novel molecules synthesized exhibit the potential to target the nonhomologous DNA end-joining (NHEJ) pathway with cytotoxic ability. Computational studies compliment the in vitro biological assays of the 8 small-molecule inhibitors. DNA double-strand breaks (DSBs) are considered as the most lethal among different DNA damages. NHEJ repairs about 70% of the DSBs generated in cells within mammals. The DNA-dependent protein kinase catalytic subunit is one of the PI3 kinases associated with NHEJ. Compounds DK01-DK08 were investigated for their ability to induce cancer cell death by treating with two leukemic cell lines where NHEJ is high. Results showed that bromoaryl (DK04)- and nitroaryl (DK05)-conjugated molecules showed excellent biological activity, having IC50 values of ∼2 μM in Nalm6 cell lines.
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Affiliation(s)
- Deepak
J. Prabhu
- Post
Graduate Research Department of Chemistry, Maharajas College, Ernakulam, Ernakulam, Kerala 682011, India
| | - Ujjayinee Ray
- Department
of Microbiology, Techno India University,
Kolkata, West Bengal 700091, India
| | - Anjaly Rajeev
- Post
Graduate and Research Department of Chemistry, Sacred Heart college (M.G University), Thevara, Kerala 682013, India
| | - Reshma Joy
- Post
Graduate and Research Department of Chemistry, Sacred Heart college (M.G University), Thevara, Kerala 682013, India
| | - Abi Thoppilan George
- Post
Graduate and Research Department of Chemistry, Sacred Heart college (M.G University), Thevara, Kerala 682013, India
| | - Jinu George
- Post
Graduate and Research Department of Chemistry, Sacred Heart college (M.G University), Thevara, Kerala 682013, India
| | - Sathees C. Raghavan
- Department
of Biochemistry, Indian Institute of Science, Bengaluru 560012, India
| | - Franklin John
- Post
Graduate and Research Department of Chemistry, Sacred Heart college (M.G University), Thevara, Kerala 682013, India
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Jacob MM, Santhosh A, Rajeev A, Joy R, John PM, John F, George J. Current Status of Natural Products/siRNA Co‐Delivery for Cancer Therapy. ChemistrySelect 2022. [DOI: 10.1002/slct.202203476] [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: 11/23/2022]
Affiliation(s)
- Megha Mariya Jacob
- Bioorganic Chemistry Laboratory Department of Chemistry Sacred Heart College (Autonomous) Kochi Kerala India- 682013
| | - Amritha Santhosh
- Bioorganic Chemistry Laboratory Department of Chemistry Sacred Heart College (Autonomous) Kochi Kerala India- 682013
| | - Anjaly Rajeev
- Bioorganic Chemistry Laboratory Department of Chemistry Sacred Heart College (Autonomous) Kochi Kerala India- 682013
| | - Reshma Joy
- Bioorganic Chemistry Laboratory Department of Chemistry Sacred Heart College (Autonomous) Kochi Kerala India- 682013
| | - Pooja Mary John
- Bioorganic Chemistry Laboratory Department of Chemistry Sacred Heart College (Autonomous) Kochi Kerala India- 682013
| | - Franklin John
- Bioorganic Chemistry Laboratory Department of Chemistry Sacred Heart College (Autonomous) Kochi Kerala India- 682013
| | - Jinu George
- Bioorganic Chemistry Laboratory Department of Chemistry Sacred Heart College (Autonomous) Kochi Kerala India- 682013
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Weyh AM, Pucci R, Busby E, Kansal L, Joy R, Bunnell A, Valentini V, Dyalram D, Pattatheyill A, Figari M, Boccalatte L, Larrañaga J, Cassoni A, Fernandes R. Contrasting opioid use for pain management in microvascular head and neck reconstruction: an international study. Int J Oral Maxillofac Surg 2022; 51:1412-1419. [PMID: 35599083 DOI: 10.1016/j.ijom.2022.04.016] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 04/26/2022] [Accepted: 04/27/2022] [Indexed: 11/30/2022]
Abstract
Opioids are often the mainstay of postoperative pain management, despite strong evidence of their ill effects and potential for long-term addiction. The goal of this study was to quantify opioid use and contrast pain management strategies of multiple international institutions performing fibula free flap reconstruction. A retrospective multicenter cohort study was designed, including five international centers. For inclusion, the patients had to have undergone a primary fibula free flap reconstruction of the mandible. A total of 185 patients were included. The median opioid use across all centers at 72 hours was 133 oral morphine equivalents. The highest utilization was in the USA (P < 0.001), which was approximately six times that of Italy, four times that of Argentina, and twice that of India, despite all centers performing a similar procedure. Based on this study there are clear differences in prescribing practices and ideologies among surgeons from different countries.
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Affiliation(s)
- A M Weyh
- Department of Oral and Maxillofacial Surgery, University of Florida Jacksonville, Jacksonville, FL, USA.
| | - R Pucci
- Department of Maxillofacial Surgery, Sapienza University of Rome, Rome, Italy.
| | - E Busby
- Department of Oral and Maxillofacial Surgery, University of Florida Jacksonville, Jacksonville, FL, USA.
| | - L Kansal
- Department of Head and Neck Surgery, Tata Medical Center, Kolkata, India.
| | - R Joy
- Department of Oral and Maxillofacial Surgery, University of Maryland, Baltimore, MD, USA.
| | - A Bunnell
- Department of Oral and Maxillofacial Surgery, University of Florida Jacksonville, Jacksonville, FL, USA.
| | - V Valentini
- Department of Maxillofacial Surgery, Sapienza University of Rome, Rome, Italy.
| | - D Dyalram
- Department of Oral and Maxillofacial Surgery, University of Maryland, Baltimore, MD, USA.
| | - A Pattatheyill
- Department of Head and Neck Surgery, Tata Medical Center, Kolkata, India.
| | - M Figari
- Department of Head and Neck Surgery, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina.
| | - L Boccalatte
- Department of Head and Neck Surgery, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina.
| | - J Larrañaga
- Department of Head and Neck Surgery, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina.
| | - A Cassoni
- Department of Maxillofacial Surgery, Sapienza University of Rome, Rome, Italy.
| | - R Fernandes
- Department of Oral and Maxillofacial Surgery, University of Florida Jacksonville, Jacksonville, FL, USA.
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Joy R, George J, John F. Brief Outlook on Polymeric Nanoparticles, Micelles, Niosomes, Hydrogels and Liposomes: Preparative Methods and Action. ChemistrySelect 2022. [DOI: 10.1002/slct.202104045] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Reshma Joy
- Bioorganic Chemistry Laboratory Sacred Heart college (Autonomous), Thevara Kochi Kerala 682013 India
| | - Jinu George
- Bioorganic Chemistry Laboratory Sacred Heart college (Autonomous), Thevara Kochi Kerala 682013 India
| | - Franklin John
- Bioorganic Chemistry Laboratory Sacred Heart college (Autonomous), Thevara Kochi Kerala 682013 India
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Joy R, Edwards S, Gupta D, Afzali P, Conley R, Kelly K, O’Brien L. Evaluation of airway and obstructive sleep apnoea in cleft lip and cleft palate adolescents using cone-beam computed tomography — a retrospective study. Int J Oral Maxillofac Surg 2017. [DOI: 10.1016/j.ijom.2017.02.235] [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: 10/19/2022]
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Joy R, Santee W, Aronovich R. Genioglossus advancement surgery — a modified technique using virtual surgical planning and a custom cutting guide. Int J Oral Maxillofac Surg 2017. [DOI: 10.1016/j.ijom.2017.02.884] [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: 10/19/2022]
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11
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Muir JE, Ainsworth L, Joy R, Racca R, Bychkov Y, Gailey G, Vladimirov V, Starodymov S, Bröker K. Distance from shore as an indicator of disturbance of gray whales during a seismic survey off Sakhalin Island, Russia. ENDANGER SPECIES RES 2015. [DOI: 10.3354/esr00701] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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12
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Muir JE, Joy R, Bychkov Y, Bröker K, Gailey G, Vladmirov V, Starodymov S, Yakovlev Y. Delineation of a coastal gray whale feeding area using opportunistic and systematic survey effort. ENDANGER SPECIES RES 2015. [DOI: 10.3354/esr00705] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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13
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Savo V, Joy R, Caneva G, McClatchey WC. Plant selection for ethnobotanical uses on the Amalfi Coast (Southern Italy). J Ethnobiol Ethnomed 2015; 11:58. [PMID: 26173678 PMCID: PMC4508904 DOI: 10.1186/s13002-015-0038-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [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: 01/20/2015] [Accepted: 05/22/2015] [Indexed: 05/22/2023]
Abstract
BACKGROUND Many ethnobotanical studies have investigated selection criteria for medicinal and non-medicinal plants. In this paper we test several statistical methods using different ethnobotanical datasets in order to 1) define to which extent the nature of the datasets can affect the interpretation of results; 2) determine if the selection for different plant uses is based on phylogeny, or other selection criteria. METHODS We considered three different ethnobotanical datasets: two datasets of medicinal plants and a dataset of non-medicinal plants (handicraft production, domestic and agro-pastoral practices) and two floras of the Amalfi Coast. We performed residual analysis from linear regression, the binomial test and the Bayesian approach for calculating under-used and over-used plant families within ethnobotanical datasets. Percentages of agreement were calculated to compare the results of the analyses. We also analyzed the relationship between plant selection and phylogeny, chorology, life form and habitat using the chi-square test. Pearson's residuals for each of the significant chi-square analyses were examined for investigating alternative hypotheses of plant selection criteria. RESULTS The three statistical analysis methods differed within the same dataset, and between different datasets and floras, but with some similarities. In the two medicinal datasets, only Lamiaceae was identified in both floras as an over-used family by all three statistical methods. All statistical methods in one flora agreed that Malvaceae was over-used and Poaceae under-used, but this was not found to be consistent with results of the second flora in which one statistical result was non-significant. All other families had some discrepancy in significance across methods, or floras. Significant over- or under-use was observed in only a minority of cases. The chi-square analyses were significant for phylogeny, life form and habitat. Pearson's residuals indicated a non-random selection of woody species for non-medicinal uses and an under-use of plants of temperate forests for medicinal uses. CONCLUSIONS Our study showed that selection criteria for plant uses (including medicinal) are not always based on phylogeny. The comparison of different statistical methods (regression, binomial and Bayesian) under different conditions led to the conclusion that the most conservative results are obtained using regression analysis.
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Affiliation(s)
- V Savo
- Hakai Institute, Simon Fraser University, 8888 University Drive, Burnaby, BC, V5A 1S6, Canada.
- Department of Science, University Roma Tre, Viale Marconi 446, 00146, Rome, Italy.
| | - R Joy
- Hakai Institute, Simon Fraser University, 8888 University Drive, Burnaby, BC, V5A 1S6, Canada.
- Department of Statistics and Actuarial Science, Simon Fraser University, 8888 University Drive, Burnaby, BC, V5A 1S6, Canada.
| | - G Caneva
- Department of Science, University Roma Tre, Viale Marconi 446, 00146, Rome, Italy.
| | - W C McClatchey
- Botanical Research Institute of Texas, 1700 N. University Drive, Fort Worth, TX, 76107-3400, USA.
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15
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Joy R. Religion of the Tangkhul Naga in North-East India: Continuity and Change. Int J Mod Anthrop 2015. [DOI: 10.4314/ijma.v1i7.3] [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: 11/17/2022] Open
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Abstract
As part of ongoing changes undergone by the NHS in recent years, the Department of Health (DH) published new reforms proposing payment by results. This was introduced in April 2004. Under this system, providers are no longer paid by block contracts but by activity adjusted for case mix.
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Affiliation(s)
- R Joy
- Department of Oral and Maxillofacial Surgery, Blackpool Victoria Hospital, Lancashire
| | - S Velagala
- Department of Oral and Maxillofacial Surgery, Blackpool Victoria Hospital, Lancashire
| | - S Akhtar
- Department of Oral and Maxillofacial Surgery, Blackpool Victoria Hospital, Lancashire
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Abstract
Upper limb digital arterial occlusion is uncommon. We present the case of a 47-year-old man with an ischaemic right middle finger (dominant hand) due to trauma from carrying a heavy plastic shopping bag. Duplex scanning revealed no proximal source of emboli. An angiogram demonstrated occlusions in the medial and lateral digital arteries of the middle digit at the level of the proximal phalanx. Treatment with heparin and warfarin resulted in complete resolution of symptoms.
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Affiliation(s)
- R Joy
- Department of Vascular Surgery, Torbay Hospital, Torquay, UK.
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Abstract
AbstractObjective:We present a rare case of laryngeal mucosal neuroma, and its management, in a patient with multiple endocrine neoplasia type 2 B.Method:We present a case report and a review of the world literature concerning laryngeal mucosal neuroma and its association with multiple endocrine neoplasia type 2 B.Case report:An 11-year-old girl was diagnosed with multiple endocrine neoplasia type 2 B on the basis of clinical presentation and genetic testing. Several years later, whilst undergoing general anaesthesia for routine dental treatment, the anaesthetic team were concerned by masses on the patient's vocal folds, which they felt could compromise her airway. The ENT team were informed of the situation and an urgent microlaryngoscopy was performed. Biopsies taken at the time were reported as showing benign mucosal neuromas. A few months later, the patient presented with acute stridor, and flexible nasal endoscopy revealed recurrence. This episode settled without surgery.Conclusion:Multiple endocrine neoplasia syndromes are inherited autosomal cancer syndromes. Laryngeal mucosal neuroma can manifest as potentially airway compromising lesions in patients with multiple endocrine neoplasia type 2 B. Although apparently rare, we feel this case highlights the need for vigilance and prompt recognition of this treatable condition.
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Affiliation(s)
- S Ghosh
- Intensive Care Unit, Torbay Hospital, Torquay, UK
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Joy R, Chadwick MA, Arthur JD, McCarthy RJ, Currie IC. SQUASH – Simple Qualitative User-Friendly Amplitude Sensor of Hand-Strength – A Non-Invasive Monitor During Carotid Endarterectomy Under Local Anaesthetic. Ann R Coll Surg Engl 2007. [DOI: 10.1308/rcsann.2007.89.2.174] [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: 11/22/2022] Open
Affiliation(s)
- R Joy
- Department of Vascular Surgery, South Devon Healthcare Trust Torbay, Devon, UK
| | - MA Chadwick
- Department of Vascular Surgery, South Devon Healthcare Trust Torbay, Devon, UK
| | - JD Arthur
- Department of Vascular Surgery, South Devon Healthcare Trust Torbay, Devon, UK
| | - RJ McCarthy
- Department of Vascular Surgery, South Devon Healthcare Trust Torbay, Devon, UK
| | - IC Currie
- Department of Vascular Surgery, South Devon Healthcare Trust Torbay, Devon, UK
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Horvitz JC, Williams G, Joy R. Time-dependent actions of D2 family agonist quinpirole on spontaneous behavior in the rat: dissociation between sniffing and locomotion. Psychopharmacology (Berl) 2001; 154:350-5. [PMID: 11349387 DOI: 10.1007/s002130000677] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
RATIONALE Dopamine agonists elevate locomotion, sniffing, grooming, and a number of other behaviors. However, the D2 family (D2/D3/D4) agonist quinpirole, across a wide dose range, produces a period of locomotor inhibition that precedes the drug's locomotor excitatory effects. OBJECTIVES The present study asked whether the suppressive actions of quinpirole also extend to other aspects of spontaneous behavior, such as sniffing, rearing and grooming, or whether this suppression of locomotion occurs while the frequency of other behaviors is increased or unaffected. METHODS Locomotion, sniffing, rearing and grooming were observed over a 150-min test session in rats treated with 0, 0.1, 0.5, 1.0, or 10.0 mg/kg quinpirole. RESULTS At 0.1 mg/kg, quinpirole suppressed locomotion. Higher doses (0.5-10.0 mg/kg) produced locomotor suppression followed by locomotor excitation. During the period of locomotor suppression, quinpirole also reduced the frequency of rearing and grooming. However, animals under high doses (1 and 10 mg/kg) of quinpirole showed elevated sniffing during the period of locomotor, rear and groom suppression. CONCLUSIONS These results demonstrate that the well-documented locomotor suppression that precedes quinpirole's excitatory locomotor actions occurs in the midst of active sniffing. These results suggest that the suppressive effects of quinpirole on locomotion do not reflect a state of general behavioral suppression.
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Affiliation(s)
- J C Horvitz
- Department of Psychology, Columbia University, 1190 Amsterdam Avenue, Room 406, New York, NY 10027, USA.
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