LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 68

Search options

  1. Article ; Online: Dysregulation of noncoding RNA in chordoma; implications in identifying potential targets for novel therapeutic approaches.

    Ghosh, Pramit Kumar / Ghosh, Amlan

    Molecular biology reports

    2024  Volume 51, Issue 1, Page(s) 125

    Abstract: Chordoma is a rare form of bone cancer develops in the spinal cord and skull. Instead of conventional (radio/chemotherapies) and targeted therapies, the disease is associated with high rate of recurrence and poor patient survival. Thus, for better ... ...

    Abstract Chordoma is a rare form of bone cancer develops in the spinal cord and skull. Instead of conventional (radio/chemotherapies) and targeted therapies, the disease is associated with high rate of recurrence and poor patient survival. Thus, for better disease management, the molecular pathogenesis of chordoma should be studied in detail to identify dysregulated biomolecules that can be targeted by novel therapeutics. Recent research showed frequent dysregulation of long noncoding RNA (lncRNA), microRNA (miRNA), and circular RNA (circRNA) in association with aggressive tumor phenotypes like cell proliferation, migration, invasion, and metastasis in a variety of cancers, including chordoma. Apart from diagnostic and prognostic importance, noncoding RNAs may serve as promising targets for novel therapeutics in cancer. In this review, we summarized a list of miRNAs, lncRNAs, and circRNA found to be dysregulated in chordoma from available data published in relevant databases (PubMed), as such an approach seems to be rare to date. The dysregulated noncoding RNAs were also associated with adverse tumor phenotypes to assess the impact on disease pathogenesis and, associated downstream molecular pathways were focused. Synthetic compounds and natural products that were reported to target the noncoding RNAs in other malignancies were also listed from published literature and proposed as potential therapeutic agents in chordoma. This review will provide information for further research on chordoma focusing on detailed characterization of dysregulated lncRNAs, miRNAs, and circRNA to understand the disease pathogenesis and, exploration of suitable natural and synthetic products targeting dysregulated non-coding RNAs to develop effective therapeutic measures.
    MeSH term(s) Humans ; Chordoma/genetics ; RNA, Long Noncoding/genetics ; RNA, Circular ; RNA, Untranslated/genetics ; MicroRNAs/genetics ; Bone Neoplasms
    Chemical Substances RNA, Long Noncoding ; RNA, Circular ; RNA, Untranslated ; MicroRNAs
    Language English
    Publishing date 2024-01-18
    Publishing country Netherlands
    Document type Journal Article ; Review
    ZDB-ID 186544-4
    ISSN 1573-4978 ; 0301-4851
    ISSN (online) 1573-4978
    ISSN 0301-4851
    DOI 10.1007/s11033-023-09017-9
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article ; Online: Perspectives and early experience on endoscopic stapedotomy from a group of "traditional school" otologists.

    Dutta, Mainak / Kundu, Sohag / Ghosh, Bhaskar / Ghosh, Pramit

    Ear, nose, & throat journal

    2022  , Page(s) 1455613221078183

    Abstract: Background: ...

    Abstract Background:
    Language English
    Publishing date 2022-03-08
    Publishing country United States
    Document type Journal Article
    ZDB-ID 750153-5
    ISSN 1942-7522 ; 0145-5613
    ISSN (online) 1942-7522
    ISSN 0145-5613
    DOI 10.1177/01455613221078183
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article ; Online: Telomerase: a nexus between cancer nanotherapy and circadian rhythm.

    Ghosh, Pramit Kumar / Rao, Maddila Jagapathi / Putta, Chandra Lekha / Ray, Sandipan / Rengan, Aravind Kumar

    Biomaterials science

    2024  

    Abstract: Cancer represents a complex disease category defined by the unregulated proliferation and dissemination of anomalous cells within the human body. According to the GLOBOCAN 2020 report, the year 2020 witnessed the diagnosis of approximately 19.3 million ... ...

    Abstract Cancer represents a complex disease category defined by the unregulated proliferation and dissemination of anomalous cells within the human body. According to the GLOBOCAN 2020 report, the year 2020 witnessed the diagnosis of approximately 19.3 million new cases of cancer and 10.0 million individuals succumbed to the disease. A typical cell eventually becomes cancerous because of a long-term buildup of genetic instability and replicative immortality. Telomerase is a crucial regulator of cancer progression as it induces replicative immortality. In cancer cells, telomerase inhibits apoptosis by elongating the length of the telomeric region, which usually protects the genome from shortening. Many nanoparticles are documented as being available for detecting the presence of telomerase, and many were used as delivery systems to transport drugs. Furthermore, telomere homeostasis is regulated by the circadian time-keeping machinery, leading to 24-hour rhythms in telomerase activity and TERT mRNA expression in mammals. This review provides a comprehensive discussion of various kinds of nanoparticles used in telomerase detection, inhibition, and multiple drug-related pathways, as well as enlightens an imperative association between circadian rhythm and telomerase activity from the perspective of nanoparticle-based anticancer therapeutics.
    Language English
    Publishing date 2024-04-10
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 2693928-9
    ISSN 2047-4849 ; 2047-4830
    ISSN (online) 2047-4849
    ISSN 2047-4830
    DOI 10.1039/d4bm00024b
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article ; Online: Passive Auto Focusing of Pathological Microscope with Intelligent Field Image Collection Mechanism.

    Ghosh, Pramit / Bhattacharjee, Debotosh / Nasipuri, Mita

    Journal of medical systems

    2021  Volume 45, Issue 2, Page(s) 25

    Abstract: The microscope is one of the widely used pathological equipment to analyze body fluids like blood, sputum, etc. in granular level. In order to reduce workload on pathologists and strengthen the telehealth services, an automatic self-focusing microscope ... ...

    Abstract The microscope is one of the widely used pathological equipment to analyze body fluids like blood, sputum, etc. in granular level. In order to reduce workload on pathologists and strengthen the telehealth services, an automatic self-focusing microscope with different field image collection mechanism is required. In this work, the conversion of a compound microscope into a complete digital self-focusing automatic microscope, with intelligent field image collection mechanism, is discussed. This method uses passive autofocusing technique. In this method, most informative regions are identified on the basis of texture information. Features from these identified regions are used for autofocusing the microscope. This system is capable of collecting multiple snaps from different regions of the smear sample slides. The problem with the smear slide is that it has un-uniform thickness upon the glass slide. So some region has a very thick layer and some region has a very thin layer. In general, both of these regions are not considered for pathological analysis. The proposed system is capable to detect the region of smear slide which is suitable for collection of snap images. A soft computing approach is used to detect the desired regions of the sample in the slide. The Raspberry pi is used to design the control section. Multi-threaded parallel programming is used to optimize I/O execution and waiting time. The performance of the proposed system is satisfactory. The average peak signal-to-noise ratio (PSNR) is about 33 in comparison with manual focusing by the domain expert. The performance of the system in terms of computation time, which is calculated on the benchmark microscopic image dataset, is better than other learning-based methods. Autofocusing of pathological microscope with an intelligent field image collection mechanism is highly useful in the remote healthcare domain. This work basically describes a mechanism to migrate the conventional compound microscope into a tale-health service compatible (IoT enabled) microscope. This system is highly suitable for developing countries where an overall change of existing infrastructure is difficult due to economic reasons.
    MeSH term(s) Humans ; Image Processing, Computer-Assisted ; Microscopy ; Software ; Sputum
    Language English
    Publishing date 2021-01-16
    Publishing country United States
    Document type Journal Article
    ZDB-ID 423488-1
    ISSN 1573-689X ; 0148-5598
    ISSN (online) 1573-689X
    ISSN 0148-5598
    DOI 10.1007/s10916-020-01688-2
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article ; Online: Epidemiology of Post-Kala-azar Dermal Leishmaniasis.

    Ghosh, Pramit / Roy, Pritam / Chaudhuri, Surya Jyati / Das, Nilay Kanti

    Indian journal of dermatology

    2021  Volume 66, Issue 1, Page(s) 12–23

    Abstract: Post-kala-azar dermal leishmaniasis (PKDL) is a cutaneous sequel of visceral leishmaniasis (VL) or kala-azar and has become an entity of epidemiological significance by virtue of its ability to maintain the disease in circulation during inter-epidemic ... ...

    Abstract Post-kala-azar dermal leishmaniasis (PKDL) is a cutaneous sequel of visceral leishmaniasis (VL) or kala-azar and has become an entity of epidemiological significance by virtue of its ability to maintain the disease in circulation during inter-epidemic periods. PKDL has been identified as one of the epidemiological marker of "kala-azar elimination programme." Data obtained in 2018 showed PKDL distribution primarily concentrated in 6 countries, which includes India, Sudan, south Sudan, Bangladesh, Ethiopia, and Nepal in decreasing order of case-burden. In India, PKDL cases are mainly found in 54 districts, of which 33 are in Bihar, 11 in West Bengal, 4 in Jharkhand, and 6 in Uttar Pradesh. In West Bengal the districts reporting cases of PKDL cases include Darjeeling, Uttar Dinajpur, Dakshin Dinajpur, Malda, and Murshidabad. The vulnerability on the young age is documented in various studies. The studies also highlights a male predominance of the disease but recent active surveillance suggested that macular form of PKDL shows female-predominance. It is recommended that along with passive case detection, active survey helps in early identification of cases, thus reducing disease transmission in the community. The
    Language English
    Publishing date 2021-04-28
    Publishing country India
    Document type Journal Article
    ZDB-ID 416069-1
    ISSN 1998-3611 ; 0019-5154
    ISSN (online) 1998-3611
    ISSN 0019-5154
    DOI 10.4103/ijd.IJD_651_20
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article ; Online: Modulation of aggregation of silk fibroin by synergistic effect of the complex of curcumin and β-cyclodextrin.

    Dubey, Priyanka / Chowdhury, Pramit K / Ghosh, Sourabh

    Biochimica et biophysica acta. Proteins and proteomics

    2019  Volume 1867, Issue 4, Page(s) 416–425

    Abstract: Amyloid aggregation has been associated with numerous human pathological diseases. A recent study has demonstrated that silk fibroin intermittently endorses amyloidogenesis in vivo. In the current study, we explored the propensity of silk fibroin to ... ...

    Abstract Amyloid aggregation has been associated with numerous human pathological diseases. A recent study has demonstrated that silk fibroin intermittently endorses amyloidogenesis in vivo. In the current study, we explored the propensity of silk fibroin to undergo amyloid-like aggregation and its prevention using an optimized concoction of curcumin with β-cyclodextrin. Aggregation of silk fibroin resulted in the formation of fibrils with a diameter of ~3.2 nm. However, addition of the optimized concentration of curcumin and β-cyclodextrin to silk fibroin inhibited aggregation and preserved the random coil conformation even under aggregation inducing conditions, as demonstrated by CD and FTIR spectroscopy. Benzene rings of curcumin interact with the aromatic residues of fibroin via hydrophobic interactions. However, β-cyclodextrin preferentially interacts with the non-polar residues, which are the core components for nucleation dependent protein aggregation. The present study demonstrates the ability of the concoction of curcumin and β-cyclodextrin in tuning the self assembly process of fibroin. It also provides a platform to explore the assembly process of nano-fibril and hierarchical structures in vitro along with a novel insight for designing clinically relevant silk-based functional biomaterials.
    MeSH term(s) Curcumin/chemistry ; Ethanol/chemistry ; Fibroins/chemistry ; Hydrogen Bonding ; Molecular Docking Simulation ; Protein Conformation ; beta-Cyclodextrins/chemistry
    Chemical Substances beta-Cyclodextrins ; Ethanol (3K9958V90M) ; Fibroins (9007-76-5) ; Curcumin (IT942ZTH98) ; betadex (JV039JZZ3A)
    Language English
    Publishing date 2019-01-21
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 2918798-9
    ISSN 1878-1454 ; 1570-9639
    ISSN (online) 1878-1454
    ISSN 1570-9639
    DOI 10.1016/j.bbapap.2019.01.009
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article ; Online: Determination of critical community size from an HIV/AIDS model.

    Sarmistha Das / Pramit Ghosh / Sandip Banerjee / Saumyadipta Pyne / Joydev Chattopadhyay / Indranil Mukhopadhyay

    PLoS ONE, Vol 16, Iss 1, p e

    2021  Volume 0244543

    Abstract: After an epidemic outbreak, the infection persists in a community long enough to engulf the entire susceptible population. Local extinction of the disease could be possible if the susceptible population gets depleted. In large communities, the tendency ... ...

    Abstract After an epidemic outbreak, the infection persists in a community long enough to engulf the entire susceptible population. Local extinction of the disease could be possible if the susceptible population gets depleted. In large communities, the tendency of eventual damp down of recurrent epidemics is balanced by random variability. But, in small communities, the infection would die out when the number of susceptible falls below a certain threshold. Critical community size (CCS) is considered to be the mentioned threshold, at which the infection is as likely as not to die out after a major epidemic for small communities unless reintroduced from outside. The determination of CCS could aid in devising systematic control strategies to eradicate the infectious disease from small communities. In this article, we have come up with a simplified computation based approach to deduce the CCS of HIV disease dynamics. We consider a deterministic HIV model proposed by Silva and Torres, and following Nåsell, introduce stochasticity in the model through time-varying population sizes of different compartments. Besides, Metcalf's group observed that the relative risk of extinction of some infections on islands is almost double that in the mainlands i.e. infections cease to exist at a significantly higher rate in islands compared to the mainlands. They attributed this phenomenon to the greater recolonization in the mainlands. Interestingly, the application of our method on demographic facts and figures of countries in the AIDS belt of Africa led us to expect that existing control measures and isolated locations would assist in temporary eradication of HIV infection much faster. For example, our method suggests that through systematic control strategies, after 7.36 years HIV epidemics will temporarily be eradicated from different communes of island nation Madagascar, where the population size falls below its CCS value, unless the disease is reintroduced from outside.
    Keywords Medicine ; R ; Science ; Q
    Subject code 612
    Language English
    Publishing date 2021-01-01T00:00:00Z
    Publisher Public Library of Science (PLoS)
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  8. Article ; Online: Determination of critical community size from an HIV/AIDS model.

    Das, Sarmistha / Ghosh, Pramit / Banerjee, Sandip / Pyne, Saumyadipta / Chattopadhyay, Joydev / Mukhopadhyay, Indranil

    PloS one

    2021  Volume 16, Issue 1, Page(s) e0244543

    Abstract: After an epidemic outbreak, the infection persists in a community long enough to engulf the entire susceptible population. Local extinction of the disease could be possible if the susceptible population gets depleted. In large communities, the tendency ... ...

    Abstract After an epidemic outbreak, the infection persists in a community long enough to engulf the entire susceptible population. Local extinction of the disease could be possible if the susceptible population gets depleted. In large communities, the tendency of eventual damp down of recurrent epidemics is balanced by random variability. But, in small communities, the infection would die out when the number of susceptible falls below a certain threshold. Critical community size (CCS) is considered to be the mentioned threshold, at which the infection is as likely as not to die out after a major epidemic for small communities unless reintroduced from outside. The determination of CCS could aid in devising systematic control strategies to eradicate the infectious disease from small communities. In this article, we have come up with a simplified computation based approach to deduce the CCS of HIV disease dynamics. We consider a deterministic HIV model proposed by Silva and Torres, and following Nåsell, introduce stochasticity in the model through time-varying population sizes of different compartments. Besides, Metcalf's group observed that the relative risk of extinction of some infections on islands is almost double that in the mainlands i.e. infections cease to exist at a significantly higher rate in islands compared to the mainlands. They attributed this phenomenon to the greater recolonization in the mainlands. Interestingly, the application of our method on demographic facts and figures of countries in the AIDS belt of Africa led us to expect that existing control measures and isolated locations would assist in temporary eradication of HIV infection much faster. For example, our method suggests that through systematic control strategies, after 7.36 years HIV epidemics will temporarily be eradicated from different communes of island nation Madagascar, where the population size falls below its CCS value, unless the disease is reintroduced from outside.
    MeSH term(s) Acquired Immunodeficiency Syndrome/epidemiology ; Africa/epidemiology ; Disease Outbreaks ; Epidemics ; HIV/isolation & purification ; HIV Infections/epidemiology ; Humans ; Madagascar/epidemiology ; Models, Statistical ; Population Density ; Risk Factors ; Stochastic Processes
    Language English
    Publishing date 2021-01-28
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ISSN 1932-6203
    ISSN (online) 1932-6203
    DOI 10.1371/journal.pone.0244543
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  9. Article: Modulation of aggregation of silk fibroin by synergistic effect of the complex of curcumin and β-cyclodextrin

    Dubey, Priyanka / Pramit K. Chowdhury / Sourabh Ghosh

    Biochimica et biophysica acta. 2019 Apr., v. 1867, no. 4

    2019  

    Abstract: Amyloid aggregation has been associated with numerous human pathological diseases. A recent study has demonstrated that silk fibroin intermittently endorses amyloidogenesis in vivo. In the current study, we explored the propensity of silk fibroin to ... ...

    Abstract Amyloid aggregation has been associated with numerous human pathological diseases. A recent study has demonstrated that silk fibroin intermittently endorses amyloidogenesis in vivo. In the current study, we explored the propensity of silk fibroin to undergo amyloid-like aggregation and its prevention using an optimized concoction of curcumin with β-cyclodextrin. Aggregation of silk fibroin resulted in the formation of fibrils with a diameter of ~3.2 nm. However, addition of the optimized concentration of curcumin and β-cyclodextrin to silk fibroin inhibited aggregation and preserved the random coil conformation even under aggregation inducing conditions, as demonstrated by CD and FTIR spectroscopy. Benzene rings of curcumin interact with the aromatic residues of fibroin via hydrophobic interactions. However, β-cyclodextrin preferentially interacts with the non-polar residues, which are the core components for nucleation dependent protein aggregation. The present study demonstrates the ability of the concoction of curcumin and β-cyclodextrin in tuning the self assembly process of fibroin. It also provides a platform to explore the assembly process of nano-fibril and hierarchical structures in vitro along with a novel insight for designing clinically relevant silk-based functional biomaterials.
    Keywords amyloid ; benzene ; beta-cyclodextrin ; biocompatible materials ; curcumin ; fibroins ; Fourier transform infrared spectroscopy ; humans ; hydrophobic bonding ; silk ; synergism
    Language English
    Dates of publication 2019-04
    Size p. 416-425.
    Publishing place Elsevier B.V.
    Document type Article
    ZDB-ID 2918798-9
    ISSN 1878-1454 ; 1570-9639
    ISSN (online) 1878-1454
    ISSN 1570-9639
    DOI 10.1016/j.bbapap.2019.01.009
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

  10. Article: Critical community size for COVID-19 -- a model based approach to provide a rationale behind the lockdown

    Das, Sarmistha / Ghosh, Pramit / Sen, Bandana / Mukhopadhyay, Indranil

    Abstract: Background: Restrictive mass quarantine or lockdown has been implemented as the most important controlling measure to fight against COVID-19. Many countries have enforced 2 - 4 weeks' lockdown and are extending the period depending on their current ... ...

    Abstract Background: Restrictive mass quarantine or lockdown has been implemented as the most important controlling measure to fight against COVID-19. Many countries have enforced 2 - 4 weeks' lockdown and are extending the period depending on their current disease scenario. Most probably the 14-day period of estimated communicability of COVID-19 prompted such decision. But the idea that, if the susceptible population drops below certain threshold, the infection would naturally die out in small communities after a fixed time (following the outbreak), unless the disease is reintroduced from outside, was proposed by Bartlett in 1957. This threshold was termed as Critical Community Size (CCS). Methods: We propose an SEIR model that explains COVID-19 disease dynamics. Using our model, we have calculated country-specific expected time to extinction (TTE) and CCS that would essentially determine the ideal number of lockdown days required and size of quarantined population. Findings: With the given country-wise rates of death, recovery and other parameters, we have identified that, if at a place the total number of susceptible population drops below CCS, infection will cease to exist after a period of TTE days, unless it is introduced from outside. But the disease will almost die out much sooner. We have calculated the country-specific estimate of the ideal number of lockdown days. Thus, smaller lockdown phase is sufficient to contain COVID-19. On a cautionary note, our model indicates another rise in infection almost a year later but on a lesser magnitude.
    Keywords covid19
    Publisher ArXiv
    Document type Article
    Database COVID19

    Kategorien

To top