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  1. Article: Investigating the Physiological Mechanisms between Resistance Training and Pain Relief in the Cancer Population: A Literature Review.

    Jiang, Yvonne / Angeletti, Peter C / Hoffman, Amy J

    Journal of cancer therapy

    2023  Volume 14, Issue 2, Page(s) 80–101

    Abstract: This literature review examines the mechanisms of how exercise, specifically in the form of resistance training, may lead to pain relief in the cancer population. Primary data from three different cancer populations: breast, prostate, and lung, will be ... ...

    Abstract This literature review examines the mechanisms of how exercise, specifically in the form of resistance training, may lead to pain relief in the cancer population. Primary data from three different cancer populations: breast, prostate, and lung, will be examined. A number of experimental studies have been conducted to confirm the effectiveness of resistance training on pain relief as well as the biochemical pathways that relate to this process. In this review, we will examine 5 randomized controlled trials. For the purposes of this review, pain is defined as physical suffering or discomfort associated with illness. Pain is the body's natural signal, bringing attention to damage that has been sustained by tissues. However, chronic pain is common in the cancer population, and often serves no good purpose but instead will negatively impact both physical and mental health. The three types of pain: nociceptive, neuropathic, and inflammatory pathways have been investigated, and the knowledge of pain mechanisms allows for the understanding of how it is associated with pain. The purpose of this exploratory literature review is to give insight on how to maximize pain-relieving effects of resistance training. Research has indicated that resistance training modulates pain pathways by upregulating the release of pain-relieving substances including beta-endorphins, anti-inflammatory cytokines, and endocannabinoids. Understanding of the benefits of resistance training may be useful in relieving cancer pain, and reproducing effects of pain-relieving strategies while minimizing the symptoms related to cancer and its treatment.
    Language English
    Publishing date 2023-02-28
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2619976-2
    ISSN 2151-1942 ; 2151-1934
    ISSN (online) 2151-1942
    ISSN 2151-1934
    DOI 10.4236/jct.2023.142008
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Seeing HPV in the New Light Offers a Glimpse of Heparin.

    Angeletti, Peter C

    Structure (London, England : 1993)

    2017  Volume 25, Issue 2, Page(s) 213

    Abstract: In this issue of Structure, Guan et al. (2017) describe cryo-EM mapping of human papillomavirus 16 (HPV16) capsids that propose locations for L2 and heparin binding sites. The high resolution of the modern cryo-EM methods (in this case down to 4.3 Å) ... ...

    Abstract In this issue of Structure, Guan et al. (2017) describe cryo-EM mapping of human papillomavirus 16 (HPV16) capsids that propose locations for L2 and heparin binding sites. The high resolution of the modern cryo-EM methods (in this case down to 4.3 Å) opens great opportunities to probe conformational changes that take place during virus-receptor binding.
    MeSH term(s) Capsid ; Capsid Proteins ; Heparin ; Human papillomavirus 16 ; Humans ; Oncogene Proteins, Viral
    Chemical Substances Capsid Proteins ; Oncogene Proteins, Viral ; Heparin (9005-49-6)
    Language English
    Publishing date 2017-02-07
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1213087-4
    ISSN 1878-4186 ; 0969-2126
    ISSN (online) 1878-4186
    ISSN 0969-2126
    DOI 10.1016/j.str.2017.01.009
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Yes-associated protein-1 overexpression in ocular surface squamous neoplasia; a potential diagnostic marker and therapeutic target.

    Julius, Peter / Siyumbwa, Stepfanie N / Maate, Fred / Moonga, Phyllis / Kang, Guobin / Kaile, Trevor / West, John T / Wood, Charles / Angeletti, Peter C

    Frontiers in oncology

    2023  Volume 13, Page(s) 1213426

    Abstract: Yes-associated protein-1 (YAP-1) is a Hippo system transcription factor, which serves as an oncogene in squamous cell carcinoma, and several solid tumors when the Hippo pathway is dysregulated. Yet, the activity of YAP-1 in ocular surface squamous ... ...

    Abstract Yes-associated protein-1 (YAP-1) is a Hippo system transcription factor, which serves as an oncogene in squamous cell carcinoma, and several solid tumors when the Hippo pathway is dysregulated. Yet, the activity of YAP-1 in ocular surface squamous neoplasia (OSSN) has not been determined. Here, we investigate the relationship between YAP-1 overexpression and OSSN. Using a cross-sectional study design, we recruited 227 OSSN patients from the University Teaching Hospitals in Lusaka, Zambia. Immunohistochemistry was used to assess YAP-1 protein overexpression in tumor tissue relative to surrounding benign squamous epithelium. OSSN patient samples (preinvasive, n = 62, 27% and invasive, n = 165, 73%) were studied. One hundred forty-nine invasive tumors contained adjacent preinvasive tissue, bringing the total number of preinvasive lesions examined to 211 (62 + 149). There was adjacent benign squamous epithelium in 50.2% (114/227) of OSSN samples. Nuclear YAP- 1 was significantly overexpressed in preinvasive (Fisher's (F): p <.0001, Monte Carlo (MC): p <.0001) and invasive (F: p <.0001, MC: p <.0001) OSSN in comparison to adjacent benign squamous epithelium when analyzed for basal keratinocyte positive count, staining intensity, expression pattern, and Immunostaining intensity-distribution index. YAP-1 expression did not differ between preinvasive and invasive OSSN (p >.05), keratinizing and non- keratinizing cancer (p >.05), or between T1/T2 and T3/T4 stages in invasive tumors (p >.05). However, grade 2 and 3 tumors had significantly stronger nucleus YAP-1 overexpression intensity than grade 1 tumors (F: p = .0078, MC: p = .0489). By immunohistochemistry, we identified significant overexpression (upregulation of YAP-1 protein expression) in preinvasive and invasive OSSN lesions compared to neighboring benign squamous epithelium. YAP-1 expression was significantly higher in poorly and moderately differentiated invasive squamous cancer than in well-differentiated carcinomas. Overexpression of YAP-1 within the margin of preinvasive and invasive OSSN, but not in the neighboring normal epithelium, indicates that it plays a role in the development and progression of OSSN.
    Language English
    Publishing date 2023-07-05
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2649216-7
    ISSN 2234-943X
    ISSN 2234-943X
    DOI 10.3389/fonc.2023.1213426
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Genome Sequence of Feline Papillomavirus Strain P20 Assembled from Metagenomic Data from the Skin of a House Cat Owner.

    Graham, Ema H / Adamowicz, Michael S / Angeletti, Peter C / Clarke, Jennifer L / Fernando, Samodha C / Herr, Joshua R

    Microbiology resource announcements

    2022  Volume 11, Issue 7, Page(s) e0107021

    Abstract: A feline papillomavirus genome was assembled from metagenomic sequencing data collected from the skin of a house cat owner. The circular genome of strain P20 is 8,069 bp in length, has a GC content of 54.38%, and displays genome organization typical of ... ...

    Abstract A feline papillomavirus genome was assembled from metagenomic sequencing data collected from the skin of a house cat owner. The circular genome of strain P20 is 8,069 bp in length, has a GC content of 54.38%, and displays genome organization typical of feline papillomaviruses. The genome exhibits approximately 75% sequence similarity to other feline papillomavirus genomes.
    Language English
    Publishing date 2022-07-05
    Publishing country United States
    Document type Journal Article
    ISSN 2576-098X
    ISSN (online) 2576-098X
    DOI 10.1128/mra.01070-21
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: How the Cervical Microbiota Contributes to Cervical Cancer Risk in Sub-Saharan Africa.

    Klein, Cameron / Kahesa, Crispin / Mwaiselage, Julius / West, John T / Wood, Charles / Angeletti, Peter C

    Frontiers in cellular and infection microbiology

    2020  Volume 10, Page(s) 23

    Abstract: Despite ongoing efforts, sub-Saharan Africa faces a higher cervical cancer burden than anywhere else in the world. Besides HPV infection, definitive factors of cervical cancer are still unclear. Particular states of the cervicovaginal microbiota and ... ...

    Abstract Despite ongoing efforts, sub-Saharan Africa faces a higher cervical cancer burden than anywhere else in the world. Besides HPV infection, definitive factors of cervical cancer are still unclear. Particular states of the cervicovaginal microbiota and viral infections are associated with increased cervical cancer risk. Notably, HIV infection, which is prevalent in sub-Saharan Africa, greatly increases risk of cervicovaginal dysbiosis and cervical cancer. To better understand and address cervical cancer in sub-Saharan Africa, a better knowledge of the regional cervicovaginal microbiome is required This review establishes current knowledge of HPV, HIV, cervicovaginal infections, and the cervicovaginal microbiota in sub-Saharan Africa. Because population statistics are not available for the region, estimates are derived from smaller cohort studies. Microbiota associated with cervical inflammation have been found to be especially prevalent in sub-Saharan Africa, and to associate with increased cervical cancer risk. In addition to high prevalence and diversity of HIV and HPV, intracellular bacterial infections such as Chlamydia, Gonorrhea, and
    MeSH term(s) Africa South of the Sahara/epidemiology ; Female ; HIV Infections/complications ; HIV Infections/epidemiology ; Humans ; Microbiota ; Uterine Cervical Neoplasms/epidemiology
    Language English
    Publishing date 2020-02-12
    Publishing country Switzerland
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Review
    ZDB-ID 2619676-1
    ISSN 2235-2988 ; 2235-2988
    ISSN (online) 2235-2988
    ISSN 2235-2988
    DOI 10.3389/fcimb.2020.00023
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: Clinical and Pathologic Presentation of Primary Ocular Surface Tumors among Zambians.

    Julius, Peter / Siyumbwa, Stepfanie N / Moonga, Phyllis / Maate, Fred / Kaile, Trevor / Kang, Guobin / West, John T / Wood, Charles / Angeletti, Peter C

    Ocular oncology and pathology

    2021  Volume 7, Issue 2, Page(s) 108–120

    Abstract: Aim: This study aimed to characterize the clinical and pathologic presentation of ocular surface tumors (OSTs) and to more precisely differentiate the grades of ocular surface squamous neoplasia (OSSN) and benign lesions among Zambians.: Methods: Two- ...

    Abstract Aim: This study aimed to characterize the clinical and pathologic presentation of ocular surface tumors (OSTs) and to more precisely differentiate the grades of ocular surface squamous neoplasia (OSSN) and benign lesions among Zambians.
    Methods: Two-hundred sixty-five Zambian patients presenting with ocular surface growths, suspicious for OSSN, were recruited between November 2017 and November 2019 to a cross-sectional study to investigate their lesions. Sociodemographic data were collected, HIV infection status and vision tests were performed, and lesions were measured and documented. Lesions >2 mm in diameter were excised and sent for pathology analysis. In addition to the biopsies, tears, blood, and buccal swabs were collected. CD4+ T-cell counts were measured by flow cytometry. Lesions were classified according to the WHO guidelines. χ
    Results: In this study, 68.3% of the participants were found to be HIV positive. The most frequent diagnoses were invasive OSSN (45.3%), preinvasive OSSN (29.1%), and pterygium (22.6%). Invasive OSSN comprised keratinizing squamous cell carcinoma (SCC) (87.5%), basaloid SCC (3.3%), and spindle cell carcinoma (3.3%). Unusual carcinomas, not described previously, included hybrid SCC (5.0%) and acantholytic SCC (0.8%). Invasive OSSN had advanced tumor (T3/T4) staging (93.3%) at diagnosis. Lymphadenopathy was rare (2.3%), and metastasis was absent. Patients were mostly female (59.2%). Median age was 36 (interquartile ranges 33-41) years (ranges 18-81). Patients with invasive OSSN were more likely to present with pain (
    Conclusion: OSTs are very common in Zambia and are strongly associated with HIV coinfection. Patients with OSSN were more likely to be HIV positive than those with pterygia. Despite the commonality of OSTs in sub-Saharan Africa, these cancers have historically been poorly characterized.
    Language English
    Publishing date 2021-01-21
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2806965-1
    ISSN 2296-4657 ; 2296-4681
    ISSN (online) 2296-4657
    ISSN 2296-4681
    DOI 10.1159/000511610
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  7. Article ; Online: Preparation and characterization of functionalized heparin-loaded poly-Ɛ-caprolactone fibrous mats to prevent infection with human papillomaviruses.

    Gonzalez, Daniela / Ragusa, Jorge / Angeletti, Peter C / Larsen, Gustavo

    PloS one

    2018  Volume 13, Issue 7, Page(s) e0199925

    Abstract: In this study, heparin-loaded poly-ɛ-caprolactone (PCL) fibrous mats were prepared and characterized based on their physical, cytotoxic, thermal, and biological properties. The main objective of the work described here was to test the hypothesis that ... ...

    Abstract In this study, heparin-loaded poly-ɛ-caprolactone (PCL) fibrous mats were prepared and characterized based on their physical, cytotoxic, thermal, and biological properties. The main objective of the work described here was to test the hypothesis that incorporation of heparin into a PCL carrier could serve as bio-compatible material capable of inhibiting Human Papillomavirus (HPV) infection. The idea of firmly anchoring heparin to capture soluble virus, vs. a slow heparin release to inhibit a virus in solution was tested. Thus, one material was produced via conventional heparin matrix encapsulation and electrohydrodynamic fiber processing in one step. A second type of material was obtained via heparin crosslinking. This was achieved by running a carbodiimide/N-hydroxysuccinimide (EDC/NHS) coupling reaction on preformed PCL fibers. In vitro HPV16 L1 protein binding capacity studies were performed. Infectivity assays were done using HPV16 pseudoviruses (PsVs) carrying a GFP plasmid to directly test the ability of the fibrous mats to prevent internalization of HPV PsVs. The crosslinked heparin material presented a dissociation constant (Kd) value comparable to those found in the literature for different heparin-protein L1 peptide interactions. Both materials significantly reduced internalization of HPV PsVs, with a reduction of 94% of PsVs internalization when matrix encapsulated heparin-loaded material was present. Differences in performance between the two proposed structures are discussed.
    MeSH term(s) Antiviral Agents/chemistry ; Antiviral Agents/metabolism ; Antiviral Agents/pharmacology ; Antiviral Agents/toxicity ; Capsid Proteins/metabolism ; HEK293 Cells ; Heparin/chemistry ; Humans ; Papillomaviridae/drug effects ; Papillomaviridae/metabolism ; Papillomaviridae/physiology ; Polyesters/chemistry ; Polyesters/metabolism ; Polyesters/pharmacology ; Polyesters/toxicity ; Succinimides/chemistry ; Temperature
    Chemical Substances 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide N-hydroxysuccinimide ; Antiviral Agents ; Capsid Proteins ; Polyesters ; Succinimides ; polycaprolactone (24980-41-4) ; Heparin (9005-49-6)
    Language English
    Publishing date 2018-07-02
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 1932-6203
    ISSN (online) 1932-6203
    DOI 10.1371/journal.pone.0199925
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  8. Article: Mycoplasma Co-Infection Is Associated with Cervical Cancer Risk.

    Klein, Cameron / Samwel, Kandali / Kahesa, Crispin / Mwaiselage, Julius / West, John T / Wood, Charles / Angeletti, Peter C

    Cancers

    2020  Volume 12, Issue 5

    Abstract: Tanzania faces one of the highest cervical cancer burdens in the world. Recent work has suggested that the bacterial ... ...

    Abstract Tanzania faces one of the highest cervical cancer burdens in the world. Recent work has suggested that the bacterial family
    Language English
    Publishing date 2020-04-28
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2527080-1
    ISSN 2072-6694
    ISSN 2072-6694
    DOI 10.3390/cancers12051093
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  9. Article: Epstein-Barr Virus, But Not Human Papillomavirus, Is Associated With Preinvasive and Invasive Ocular Surface Squamous Neoplasias in Zambian Patients.

    Julius, Peter / Siyumbwa, Stepfanie N / Moonga, Phyllis / Maate, Fred / Kaile, Trevor / Haynatski, Gleb / Minhas, Veenu / Snow, Jazmine / Peterson, Kerstin / Gihozo, Patience / Streeter, Sam / Kaur, Salan / Evans, Annika / Gonzalez, Daniela / Samwel, Kandali / Kang, Guobin / West, John T / Wood, Charles / Angeletti, Peter C

    Frontiers in oncology

    2022  Volume 12, Page(s) 864066

    Abstract: Background: The etiopathogenesis of ocular surface squamous neoplasia (OSSN) is not fully understood. We assessed the frequency of oncogenic viruses in OSSN by immunohistochemistry (IHC) and polymerase chain reaction (PCR) for human papillomavirus (HPV), ...

    Abstract Background: The etiopathogenesis of ocular surface squamous neoplasia (OSSN) is not fully understood. We assessed the frequency of oncogenic viruses in OSSN by immunohistochemistry (IHC) and polymerase chain reaction (PCR) for human papillomavirus (HPV), Epstein-Barr virus (EBV), Merkel cell polyomavirus (MCPyV), Kaposi sarcoma virus, and adenovirus. Cases from Zambia were prospectively enrolled using a cross-sectional study design between November 2017 and March 2020.
    Methods: Demographic and clinical data [age, sex, HIV status, antiretroviral therapy (ART) history, CD4 count, plasma viral load] and tumor biopsies were collected from 243 consenting patients. Tumor samples were bisected, and half was used for DNA isolation, while the other half was formalin fixed and paraffin embedded (FFPE) for histopathology analysis. The expressions of latent EBV nuclear antigen 1 (EBNA1), CDKN2A/p16INK4A (p16), and MCPyV large T-antigen (LT) were tested by IHC. Multiplex PCR was used to detect 16 HPV genotypes and four other DNA tumor viruses [Kaposi's sarcoma-associated herpesvirus (KSHV), EBV, MCPyV, and adenovirus]. Relationships between HIV status, viral DNA and protein expression, and tumor grades were determined by statistical analysis.
    Results: OSSN tumors from patients were 29.6% preinvasive and 70.4% invasive. Patients presented with unilateral tumors that were 70.4% late stage (T3/T4). OSSN patients were HIV positive (72.8%). IHC on 243 FFPE biopsies resulted in the detection of EBNA1 (EBV), p16 high-risk HPV (HR-HPV), and MCPyV LT expression in 89.0%, 4.9%, and 0.0%, respectively. EBNA1 was expressed in all grades of preinvasive [cornea-conjunctiva intraepithelial neoplasia (CIN)1, 100%; CIN2, 85.7%; CIN3, 95.8%; and carcinoma
    Conclusions: Our findings of EBV DNA and EBNA1 protein in all the grades of preinvasive and especially invasive OSSN are consistent with a potential causal role for EBV in OSSN. A role of HPV in OSSN was not clearly established in this study.
    Language English
    Publishing date 2022-04-14
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2649216-7
    ISSN 2234-943X
    ISSN 2234-943X
    DOI 10.3389/fonc.2022.864066
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  10. Article ; Online: Co-infection and co-localization of Kaposi sarcoma-associated herpesvirus and Epstein-Barr virus in HIV-associated Kaposi sarcoma: a case report.

    Julius, Peter / Kang, Guobin / Siyumbwa, Stepfanie / Musumali, Jane / Tso, For Yue / Ngalamika, Owen / Kaile, Trevor / Maate, Fred / Moonga, Phyllis / West, John T / Angeletti, Peter / Wood, Charles

    Frontiers in cellular and infection microbiology

    2023  Volume 13, Page(s) 1270935

    Abstract: Kaposi sarcoma (KS), a multifocal vascular neoplasm frequently observed in HIV-positive individuals, primarily affects the skin, mucous membranes, visceral organs, and lymph nodes. KS is associated primarily with Kaposi sarcoma-associated herpesvirus ( ... ...

    Abstract Kaposi sarcoma (KS), a multifocal vascular neoplasm frequently observed in HIV-positive individuals, primarily affects the skin, mucous membranes, visceral organs, and lymph nodes. KS is associated primarily with Kaposi sarcoma-associated herpesvirus (KSHV) infection. In this case report, we present a rare occurrence of co-infection and co-localization of KSHV and Epstein-Barr virus (EBV) in KS arising from the conjunctiva, which, to our knowledge, has not been reported previously. Immunohistochemistry (IHC), DNA polymerase chain reaction (PCR), and EBV-encoded RNA
    MeSH term(s) Humans ; Sarcoma, Kaposi/complications ; Sarcoma, Kaposi/epidemiology ; Herpesvirus 8, Human/genetics ; Herpesvirus 4, Human ; Epstein-Barr Virus Infections/complications ; Coinfection/complications ; Herpesviridae Infections ; Acquired Immunodeficiency Syndrome/complications
    Language English
    Publishing date 2023-10-20
    Publishing country Switzerland
    Document type Case Reports ; Research Support, N.I.H., Extramural
    ZDB-ID 2619676-1
    ISSN 2235-2988 ; 2235-2988
    ISSN (online) 2235-2988
    ISSN 2235-2988
    DOI 10.3389/fcimb.2023.1270935
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