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  1. Article ; Online: Combining antiviral drugs with BET inhibitors is beneficial in combatting SARS-CoV-2 infection.

    Acharya, Arpan / Kutateladze, Tatiana G / Byrareddy, Siddappa N

    Clinical and translational discovery

    2022  Volume 2, Issue 2

    Abstract: The COVID-19 pandemic caused by the novel coronavirus SARS-CoV-2 has resulted in more than 500 million cases and 6 million deaths. Several antiviral therapies and vaccines have been developed to mitigate the spread of this infection. However, new ... ...

    Abstract The COVID-19 pandemic caused by the novel coronavirus SARS-CoV-2 has resulted in more than 500 million cases and 6 million deaths. Several antiviral therapies and vaccines have been developed to mitigate the spread of this infection. However, new approaches are required to battle emerging SARS-CoV-2 variants containing mutations that can reduce the vaccines' efficacy. The use of a combination of viral drugs with inhibitors of the mTOR signaling pathways has emerged as one of the promising novel approaches. We recently showed that SF2523, a dual activity small molecule that inhibits PI3K and BRD4, acts synergistically with the antiviral drugs remdesivir and MU-UNMC-2. Our findings suggest that the mTOR pathways are necessary for SARS-CoV-2 pathogenesis in human cells and targeting PI3K/BET (bromodomain and extra-terminal domain proteins) alone or combined with antiviral therapies is beneficial in mitigating SARS-CoV-2 and its variants of concern (VOCs).
    Language English
    Publishing date 2022-05-06
    Publishing country United States
    Document type Journal Article
    ISSN 2768-0622
    ISSN (online) 2768-0622
    DOI 10.1002/ctd2.66
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Comment on the Article: Outcomes of Therapeutic Keratoplasty in Cases of Refractory Infectious Keratitis.

    Singh, Garima / Farooqui, Javed Hussain / Acharya, Manisha / Gandhi, Arpan

    Journal of current ophthalmology

    2021  Volume 33, Issue 2, Page(s) 215–216

    Language English
    Publishing date 2021-07-05
    Publishing country India
    Document type Journal Article
    ISSN 2452-2325
    ISSN 2452-2325
    DOI 10.4103/joco.joco_67_20
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Three Consecutive Cases of Ocular Polyhexamethylene Biguanide (PHMB) Toxicity Due to Compounding Error.

    Patel, Nikunj V / Mathur, Umang / Sawant, Sanil / Acharya, Manisha / Gandhi, Arpan

    Cureus

    2023  Volume 15, Issue 5, Page(s) e38540

    Abstract: Acanthamoeba keratitis is treated with long-term biguanide therapy, and the treatment itself can lead to ocular side effects. Knowledge of possible toxic complications can help in the better titration of the treatment regimen. Here, we describe the toxic ...

    Abstract Acanthamoeba keratitis is treated with long-term biguanide therapy, and the treatment itself can lead to ocular side effects. Knowledge of possible toxic complications can help in the better titration of the treatment regimen. Here, we describe the toxic side effects of polyhexamethylene biguanide (PHMB), which occurred in three consecutive patients treated with in-house compounded PHMB. There was an error in compounding the solution, with the resultant concentration of PHMB being around 0.2%. Patients developed ocular toxicity like conjunctival inflammation, persistent epithelial defect, and large pigment clumps on endothelium within six weeks of initiation of therapy. All of them developed rapidly progressive cataract and mydriatic pupil within three months. PHMB has the potential to cause irreversible damage to ocular structures, and the toxicity is time and concentration-dependent.
    Language English
    Publishing date 2023-05-04
    Publishing country United States
    Document type Case Reports
    ZDB-ID 2747273-5
    ISSN 2168-8184
    ISSN 2168-8184
    DOI 10.7759/cureus.38540
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: Therapeutic Potential of Cannabis: A Comprehensive Review of Current and Future Applications.

    Leinen, Zach J / Mohan, Rahul / Premadasa, Lakmini S / Acharya, Arpan / Mohan, Mahesh / Byrareddy, Siddappa N

    Biomedicines

    2023  Volume 11, Issue 10

    Abstract: Historically, cannabis has been valued for its pain-relieving, anti-inflammatory, and calming properties. Ancient civilizations like the Egyptians, Greeks, and Chinese medicines recognized their therapeutic potential. The discovery of the endocannabinoid ...

    Abstract Historically, cannabis has been valued for its pain-relieving, anti-inflammatory, and calming properties. Ancient civilizations like the Egyptians, Greeks, and Chinese medicines recognized their therapeutic potential. The discovery of the endocannabinoid system, which interacts with cannabis phytoconstituents, has scientifically explained how cannabis affects the human immune system, including the central nervous system (CNS). This review explores the evolving world of cannabis-based treatments, spotlighting its diverse applications. By researching current research and clinical studies, we probe into how cannabinoids like Δ9-tetrahydrocannabinol (THC) and cannabidiol (CBD) help to manage conditions ranging from chronic pain, persistent inflammation, cancer, inflammatory bowel disease, and neurological disorders to even viral diseases such as Human Immunodeficiency virus (HIV), SARS-CoV-2. and the emerging monkeypox. The long-term recreational use of cannabis can develop into cannabis use disorder (CUD), and therefore, understanding the factors contributing to the development and maintenance of cannabis addiction, including genetic predisposition, neurobiological mechanisms, and environmental influences, will be timely. Shedding light on the adverse impacts of CUD underscores the importance of early intervention, effective treatment approaches, and public health initiatives to address this complex issue in an evolving landscape of cannabis policies and perceptions.
    Language English
    Publishing date 2023-09-25
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2720867-9
    ISSN 2227-9059
    ISSN 2227-9059
    DOI 10.3390/biomedicines11102630
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: The 2022 outbreak and the pathobiology of the monkeypox virus.

    Kumar, Narendra / Acharya, Arpan / Gendelman, Howard E / Byrareddy, Siddappa N

    Journal of autoimmunity

    2022  Volume 131, Page(s) 102855

    Abstract: Following two reports of monkeypox virus infection in individuals who returned from Nigeria to the USA, one who returned to Texas (July 2021) and the other to the Washington, DC area (November 2021), the number of monkeypox infection have dramatically ... ...

    Abstract Following two reports of monkeypox virus infection in individuals who returned from Nigeria to the USA, one who returned to Texas (July 2021) and the other to the Washington, DC area (November 2021), the number of monkeypox infection have dramatically increased. This sounded an alarm of potential for spreading of the virus throughout the USA. During 2022, there was a report of monkeypox virus infection (May 6, 2022) in a British national following a visit to Nigeria who developed readily recognizable signs and symptoms of monkeypox virus infection. Soon following this report, case numbers climbed. By June 10, 2022, more than 1,500 cases were reported in 43 countries, including Europe and North America. While the prevalence of the monkeypox virus is well known in central and western Africa, its presence in the developed world has raised disturbing signs for worldwide spread. While infection was reported during the past half-century, starting in the Democratic Republic of Congo in 1970, in the United States, only sporadic monkeypox cases have been reported. All cases have been linked to international travel or through African animal imports. The monkeypox virus is transmitted through contact with infected skin, body fluids, or respiratory droplets. The virus spreads from oral and nasopharyngeal fluid exchanges or by intradermal injection; then rapidly replicates at the inoculation site with spreads to adjacent lymph nodes. Monkeypox disease begins with constitutional symptoms that include fever, chills, headache, muscle aches, backache, and fatigue. Phylogenetically the virus has two clades. One clade emerged from West Africa and the other in the Congo Basin of Central Africa. During the most recent outbreak, the identity of the reservoir host or the primary carriage remains unknown. African rodents are the suspected intermediate hosts. At the same time, the Centers for Disease Control (CDC) affirmed that there are no specific treatments for the 2022 monkeypox virus infection; existing antivirals shown to be effective against smallpox may slow monkeypox spread. A smallpox vaccine JYNNEOS (Imvamune or Imvanex) may also be used to prevent infection. The World Health Organization (WHO), has warned that the world could be facing a formidable infectious disease challenge in light of the current status of worldwide affairs. These affairs include the SARS-COVID-19 pandemic and the Ukraine-Russia war. In addition, the recent rise in case of numbers worldwide could continue to pose an international threat. With this in mind, strategies to mitigate the spread of monkeypox virus are warranted.
    MeSH term(s) Animals ; COVID-19 ; Disease Outbreaks ; Humans ; Mpox (monkeypox)/epidemiology ; Monkeypox virus ; Pandemics
    Language English
    Publishing date 2022-06-25
    Publishing country England
    Document type Journal Article ; Review ; Research Support, Non-U.S. Gov't ; Research Support, N.I.H., Extramural
    ZDB-ID 639452-8
    ISSN 1095-9157 ; 0896-8411
    ISSN (online) 1095-9157
    ISSN 0896-8411
    DOI 10.1016/j.jaut.2022.102855
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Acute stromal keratitis in clinics - are we missing microsporidia?

    Farooqui, Javed Hussain / Acharya, Manisha / Gandhi, Arpan / Mathur, Umang

    GMS ophthalmology cases

    2020  Volume 10, Page(s) Doc01

    Abstract: Purpose: ...

    Abstract Purpose:
    Language English
    Publishing date 2020-02-14
    Publishing country Germany
    Document type Case Reports
    ZDB-ID 2628607-5
    ISSN 2193-1496 ; 2193-1496
    ISSN (online) 2193-1496
    ISSN 2193-1496
    DOI 10.3205/oc000128
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Molluscum-related keratoconjunctivitis.

    Singh, Manisha / Acharya, Manisha / Gandhi, Arpan / Prakash, Ujjwal

    Indian journal of ophthalmology

    2019  Volume 67, Issue 7, Page(s) 1176

    MeSH term(s) Diagnosis, Differential ; Eye Infections, Viral/diagnosis ; Eye Infections, Viral/virology ; Follow-Up Studies ; Humans ; Keratoconjunctivitis/diagnosis ; Keratoconjunctivitis/virology ; Male ; Molluscum Contagiosum/diagnosis ; Molluscum Contagiosum/virology ; Molluscum contagiosum virus/isolation & purification ; Young Adult
    Language English
    Publishing date 2019-06-25
    Publishing country India
    Document type Case Reports ; Journal Article
    ZDB-ID 187392-1
    ISSN 1998-3689 ; 0301-4738
    ISSN (online) 1998-3689
    ISSN 0301-4738
    DOI 10.4103/ijo.IJO_1808_18
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Potential therapeutic targets for Mpox: the evidence to date.

    Byrareddy, Siddappa N / Sharma, Kalicharan / Sachdev, Shrikesh / Reddy, Athreya S / Acharya, Arpan / Klaustermeier, Kaylee M / Lorson, Christian L / Singh, Kamal

    Expert opinion on therapeutic targets

    2023  Volume 27, Issue 6, Page(s) 419–431

    Abstract: Introduction: The global Mpox (MPX) disease outbreak caused by the Mpox virus (MPXV) in 2022 alarmed the World Health Organization (WHO) and health regulation agencies of individual countries leading to the declaration of MPX as a Public Health ... ...

    Abstract Introduction: The global Mpox (MPX) disease outbreak caused by the Mpox virus (MPXV) in 2022 alarmed the World Health Organization (WHO) and health regulation agencies of individual countries leading to the declaration of MPX as a Public Health Emergency. Owing to the genetic similarities between smallpox-causing poxvirus and MPXV, vaccine JYNNEOS, and anti-smallpox drugs Brincidofovir and Tecovirimat were granted emergency use authorization by the United States Food and Drug Administration. The WHO also included cidofovir, NIOCH-14, and other vaccines as treatment options.
    Areas covered: This article covers the historical development of EUA-granted antivirals, resistance to these antivirals, and the projected impact of signature mutations on the potency of antivirals against currently circulating MPXV. Since a high prevalence of MPXV infections in individuals coinfected with HIV and MPXV, the treatment results among these individuals have been included.
    Expert opinion: All EUA-granted drugs have been approved for smallpox treatment. These antivirals show good potency against Mpox. However, conserved resistance mutation positions in MPXV and related poxviruses, and the signature mutations in the 2022 MPXV can potentially compromise the efficacy of the EUA-granted treatments. Therefore, MPXV-specific medications are required not only for the current but also for possible future outbreaks.
    MeSH term(s) United States ; Humans ; Mpox (monkeypox) ; Antiviral Agents/pharmacology ; Cidofovir ; Benzamides
    Chemical Substances Antiviral Agents ; Cidofovir (JIL713Q00N) ; Benzamides
    Language English
    Publishing date 2023-07-04
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2055208-7
    ISSN 1744-7631 ; 1472-8222
    ISSN (online) 1744-7631
    ISSN 1472-8222
    DOI 10.1080/14728222.2023.2230361
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: The Contributions of Clinical Pharmacology to HIV Cure Research.

    Fletcher, Courtney V / Dyavar, Shetty Ravi / Acharya, Arpan / Byrareddy, Siddappa N

    Clinical pharmacology and therapeutics

    2021  Volume 110, Issue 2, Page(s) 334–345

    Abstract: Combination antiretroviral therapy (ART) can suppress plasma HIV-RNA to < 50 copies/mL, decrease HIV transmission, reduce mortality, and improve quality of life for people living with HIV. ART cannot, however, eliminate HIV from an infected individual. ... ...

    Abstract Combination antiretroviral therapy (ART) can suppress plasma HIV-RNA to < 50 copies/mL, decrease HIV transmission, reduce mortality, and improve quality of life for people living with HIV. ART cannot, however, eliminate HIV from an infected individual. The primary barrier to cure HIV infection is the multiple reservoir sites, including adipose tissue, bone marrow, central nervous system, liver, lungs, male and female reproductive system, secondary lymph nodes, and gut-associated lymphoid tissue, established 1 to 2 weeks after acquisition of HIV. Additional challenges include understanding the mechanism(s) by which HIV is maintained at low or undetectable levels and developing treatments that will eradicate or produce a sustained suppression of virus without ART. To date, the most extensive clinical investigations of cure strategies have been the shock-and-kill approach using histone deacetylase inhibitors (HDACis) to induce reactivation of latent HIV. Despite evidence for HIV latency reversal, HDACis alone have not decreased the size of the latent reservoir. Clinical pharmacologic explanations for these results include a low inhibitory quotient (i.e., low potency) within the reservoir sites and intrinsic (e.g., sex differences and reservoir size) and extrinsic (physiochemical and pharmacokinetic drug characteristics) factors. We offer an outline of desired clinical pharmacologic attributes for therapeutics intended for clinical HIV cure research and call for research teams to have early and ongoing involvement of clinical pharmacologists. We believe such a collective effort will provide a solid scientific basis and hope for reaching the goal of a cure for HIV infection.
    MeSH term(s) Animals ; Anti-Retroviral Agents/pharmacokinetics ; Anti-Retroviral Agents/therapeutic use ; Biomarkers ; CD4-Positive T-Lymphocytes ; DNA, Viral/metabolism ; Disease Models, Animal ; Dose-Response Relationship, Drug ; Drug Therapy, Combination ; HIV Infections/drug therapy ; HIV Infections/physiopathology ; Half-Life ; Histone Deacetylase Inhibitors/pharmacokinetics ; Histone Deacetylase Inhibitors/therapeutic use ; Humans ; Metabolic Clearance Rate ; Pharmacology, Clinical ; Quality of Life ; Sex Factors ; Tissue Distribution/physiology ; Viral Load/drug effects ; Virus Latency/drug effects
    Chemical Substances Anti-Retroviral Agents ; Biomarkers ; DNA, Viral ; Histone Deacetylase Inhibitors
    Language English
    Publishing date 2021-04-18
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 123793-7
    ISSN 1532-6535 ; 0009-9236
    ISSN (online) 1532-6535
    ISSN 0009-9236
    DOI 10.1002/cpt.2237
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: Proteomic landscape of astrocytes and pericytes infected with HIV/SARS-CoV-2 mono/co-infection, impacting on neurological complications.

    Acharya, Arpan / Ambikan, Anoop T / Thurman, Michellie / Malik, Mohid Reza / Dyavar, Shetty Ravi / Végvári, Ákos / Neogi, Ujjwal / Byrareddy, Siddappa N

    Research square

    2023  

    Abstract: Background: Although most individuals recover from coronavirus disease 2019 (COVID-19) within a few weeks, some people continue to experience a wide range of symptoms known as post-acute sequelae of SARS-CoV-2 (PASC) or long COVID. Majority of patients ... ...

    Abstract Background: Although most individuals recover from coronavirus disease 2019 (COVID-19) within a few weeks, some people continue to experience a wide range of symptoms known as post-acute sequelae of SARS-CoV-2 (PASC) or long COVID. Majority of patients with PASC develop neurological disorders like brain fog, fatigue, mood swings, sleep disorders, loss of smell and test among others collectively called neuro-PASC. While the people living with HIV (PWH) do not have a higher risk of developing severe disease and mortality/morbidity due to COVID-19. As a large section of PWH suffered from HIV-associated neurocognitive disorders (HAND), it is essential to understand the impact of neuro-PASC on people with HAND. In pursuit of this, we infected HIV/SARS-CoV-2 alone or together in primary human astrocytes and pericytes and performed proteomics to understand the impact of co-infection in the central nervous system.
    Methods: Primary human astrocytes and pericytes were infected with SARS-CoV-2 or HIV or HIV + SARS-CoV-2. The concentration of HIV and SARS-CoV-2 genomic RNA in the culture supernatant was quantified using reverse transcriptase quantitative real time polymerase chain reaction (RT-qPCR). This was followed by a quantitative proteomics analysis of mock, HIV, SARS-CoV-2, and HIV + SARS-CoV-2 infected astrocytes and pericytes to understand the impact of the virus in CNS cell types.
    Results: Both healthy and HIV-infected astrocytes and pericytes support abortive/low level of SARS-CoV-2 replication. In both mono-infected and co-infected cells, we observe a modest increase in the expression of SARS-CoV-2 host cell entry factors (ACE2, TMPRSS2, NRP1, and TRIM28) and inflammatory mediators (IL-6, TNF-α, IL-1β and IL-18). Quantitative proteomic analysis has identified uniquely regulated pathways in mock vs SARS-CoV-2, mock vs HIV + SARS-CoV-2, and HIV vs HIV + SARS-CoV-2 infected astrocytes and pericytes. The gene set enrichment analysis revealed that the top ten enriched pathways are linked to several neurodegenerative disorders, including Alzheimer's disease, Parkinson's disease, Huntington's disease, and amyotrophic lateral sclerosis.
    Conclusions: Our study emphasizes the significance of long-term monitoring of patients co-infected with HIV and SARS-CoV-2 to detect and understand the development of neurological abnormalities. By unraveling the molecular mechanisms involved, we can identify potential targets for future therapeutic interventions.
    Language English
    Publishing date 2023-06-12
    Publishing country United States
    Document type Preprint
    DOI 10.21203/rs.3.rs-3031591/v1
    Database MEDical Literature Analysis and Retrieval System OnLINE

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