11 results on '"Tonui P"'
Search Results
2. Mortality factors in high and ultra-high-risk gestational trophoblastic neoplasia at moi teaching & referral hospital: A decade-long observation in kenya
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Amina R. Hassan, Peter M. Itsura, Barry P. Rosen, Allan L. Covens, Afrin F. Shaffi, Elly B. Odongo, Anisa W. Mburu, Wilmot L. Smith, Sharon K. Moturi, Ronald K. Too, Chia M. Ayeah, and Philiph K. Tonui
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Gestational trophoblastic neoplasia ,Mortality ,Ultrahigh risk ,Chemotherapy ,Gynecology and obstetrics ,RG1-991 ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Published
- 2024
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3. Cervical cancer management in a low resource setting: A 10-year review in a tertiary care hospital in Kenya
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Afrin F. Shaffi, Elly B. Odongo, Peter M. Itsura, Phillip K. Tonui, Anisa W. Mburu, Amina R. Hassan, Barry P. Rosen, and Allan L. Covens
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Cervical cancer ,Radical hysterectomy ,Radiotherapy ,Low- and - middle-income countries ,Gynecology and obstetrics ,RG1-991 ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Background: Cervical cancer is one of the leading causes of cancer mortality among women in Kenya due to late presentations, poor access to health care, and limited resources. Across many low- and middle-income countries infrastructure and human resources for cervical cancer management are currently insufficient to meet the high population needs therefore patients are not able to get appropriate treatment. Objective: This study aimed to describe the clinicopathological characteristics and the treatment profiles of cervical cancer cases seen at Moi Teaching and Referral Hospital (MTRH) Methods: This was a retrospective cross-sectional study conducted at MTRH involving the review of the electronic database and medical charts of 1541 patients with a histologically confirmed diagnosis of cervical cancer between January 2012 and December 2021. Results: Of the 1541 cases analyzed, 91% were squamous cell carcinomas, 8% were adenocarcinomas, and 1% were other histological types. Thirty-eight percent of the patients were HIV infected and less than 30% of the women had health insurance. A majority (75%) of the patients presented with advanced-stage disease (stage IIB-IV). Only 13.9% received chemoradiotherapy with curative intent; of which 33.8% received suboptimal treatment. Of the 13% who received surgical treatment, 45.3% required adjuvant therapy, of which only 27.5% received treatment. Over 40% of the women were lost to follow-up. Conclusion: Most of the patients with cervical cancer in Kenya present at advanced stages with only a third receiving the necessary treatment while the majority receive only palliative treatment or supportive care.
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- 2024
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4. Empowering older Chinese immigrant volunteers: A pilot study of a psychoeducational intervention for foster grandparents
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Ling Xu, Noelle L. Fields, Betty C. Tonui, and Triste Vasquez-White
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Foster grandparents ,Psychoeducational intervention ,Chinese immigrants ,Volunteers ,Mental healing ,RZ400-408 ,Public aspects of medicine ,RA1-1270 - Abstract
This study aimed to evaluate whether a psychoeducational intervention provided to older Chinese immigrant foster grandparents (FGs) would improve their knowledge, skills, confidence, coping skills, and mental health outcomes when working with children who have special needs. Pre and posttests with standardized measures were conducted among older Chinese immigrant FGs (N = 18). Non-parametric Wilcoxon signed rank tests were conducted to examine whether the main outcome measures were significantly different after the intervention. Results showed that FGs experienced improvement in grandparenting empowerment, caregiving mastery skills, perceived social support, negative social interaction, as well as life satisfaction after the intervention. However, the results did not show improvement in measurements of stress, knowledge of formal services, and coping skills after the psychoeducational intervention. Overall, the result suggests that this psychoeducational intervention is a promising one for older Chinese immigrant FGs with implications for other minority populations. Recommendations and strategies for enhancing interprofessional collaboration to address the needs of FGs are also provided.
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- 2022
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5. Epidemiological profile and clinico-pathological features of pediatric gynecological cancers at Moi Teaching & Referral Hospital, Kenya
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Anisa W. Mburu, Peter M. Itsura, Elkanah O. Orang'o, Philliph K. Tonui, Elly B. Odongo, Afrin F. Shaffi, Hellen N. Muliro, Thomas N. Achia, Allan L. Covens, and Barry P. Rosen
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Pediatric germ cell tumors ,Genital rhabdomyosarcoma ,Pediatric Sertoli-Leydig cell tumors ,Pediatric juvenile granulosa cell tumor ,Gynecology and obstetrics ,RG1-991 ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Background: The main pediatric (0–18 years) gynecologic cancers include stromal carcinomas (juvenile granulosa cell tumors and Sertoli-Leydig cell tumors), genital rhabdomyosarcomas and ovarian germ cell. Outcomes depend on time of diagnosis, stage, tumor type and treatment which can have long-term effects on the reproductive career of these patients. This study seeks to analyze the trends in clinical-pathologic presentation, treatment and outcomes in the cases seen at our facility. This is the first paper identifying these cancers published from sub-Saharan Africa. Method: Retrospective review of clinico-pathologic profiles and treatment outcomes of pediatric gynecologic oncology patients managed at MTRH between 2010 and 2020. Data was abstracted from gynecologic oncology database and medical charts. Results: Records of 40 patients were analyzed. Most, (92.5%, 37/40) of the patients were between 10 and 18 years. Ovarian germ cell tumors were the leading histological diagnosis in 72.5% (29/40) of the patients; with dysgerminomas being the commonest subtype seen in 12 of the 37 patients (32.4%). The patients received platinum-based chemotherapy in 70% of cases (28/40). There were 14 deaths among the 40 patients (35%) Conclusion: Surgery remains the main stay of treatment and fertility-sparing surgery with or without adjuvant platinum-based chemotherapy are the standard of care with excellent prognosis following early detection and treatment initiation. LMICs face several challenges in access to quality care and that affects survival of these patients. Due to its commonality, ovarian germ cell cancers warrant a high index of suspicion amongst primary care providers attending to adnexal masses in this age group.
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- 2022
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6. First investigation on the presence of porcine parvovirus type 3 in domestic pig farms without reproductive failure in the Democratic Republic of Congo
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Patrick N. Bisimwa, Dieudonné S. Wasso, Fabrice Bantuzeko, Chance B. Aksanti, Ronald Tonui, Ahadi B. Birindwa, and Espoir B. Bisimwa
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Genetic diversity ,Pigs ,Porcine Parvovirus ,Frequency ,Reproductive failures ,DRC ,Veterinary medicine ,SF600-1100 - Abstract
ABSTRACT: Porcine Parvovirus (PPV) is one of the major pathogens responsible for reproductive failure in sows. However, the information on its frequency in the Democratic Republic of Congo (DRC) is largely unknown. Thus, the present study was carried out to detect and genetically characterize some of known Parvovirus namely porcine parvovirus 1, 2, 3, 4, porcine bocavirus (PBoV) 1, and porcine bocavirus-like virus (PBolikeV) in 80 randomly selected archive pig farm samples during an African swine fever (ASF) survey in South Kivu, eastern DRC by polymerase chain reaction (PCR). The majority of animals analyzed (82.5%) were local breeds, and most of them (87.5%) were adults (above one year old). The majority of the animals (65%) were from the free range farms. The PCR result indicated that only PPV3 was detected in 14/80 pigs. Seven swine herds (8.7%) were co-infected with PPV3 and ASFV. Morever, a significantly high PPV3 infection rate was observed in the spleen (66.7%, P
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- 2021
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7. Detection and genetic characterization of African swine fever virus (ASFV) in clinically infected pigs in two districts in South Kivu province, Democratic Republic Congo
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Patrick N. Bisimwa, Lionel K. Ishara, Dieudonné S. Wasso, Fabrice Bantuzeko, Ronald Tonui, and Ahadi B. Bwihangane
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African swine fever ,Democratic republic of Congo ,Genotype ,Molecular epidemiology ,Outbreaks ,Pigs ,Science (General) ,Q1-390 ,Social sciences (General) ,H1-99 - Abstract
African swine fever (ASF) is a notifiable contagious disease caused by the African swine fever virus (ASFV), leading to a serious socio-economic impact, constraining pig industry, and affecting food security worldwide. This study aimed to detect and characterize ASFV strains from suspected infected domestic pigs in two South-Kivu province districts of the Democratic Republic of the Congo (DRC). A total of 155 pig samples were screened for viral DNA and sequencing at multiple loci. An infection rate of 5.2% (8/155) was recorded from a total of 155 blood samples with the highest ASFV infection rate of 8% for Uvira (6/75) and mostly in female pigs 5 (7.6%). Most ASF associated clinical signs were redness on the skin and snout at 49% (95% CI: 21–34), followed by the unwillingness of pigs to stand at 29 % (95%, CI: 19–35). Phylogenetic analysis of partial B646L (p72) and the full-length E183 (p54) gene sequences revealed the circulation of genotypes IX and X, which clustered with previously reported viruses in the same region, Uganda, Kenya, and Tanzania. Intragenotypic resolution of the CVR region clustered the viruses into two subgroups: the genotype X strain subgroup (10 repeats, AAAABNAABA) and the genotype IX strain subgroup (11 repeats, AAAAAAAAAAF). This finding provides additional evidence that genetically similar ASFV strains may be circulating within South Kivu province and highlights the need for improved coordination to prevent the spread of the disease in non-infected areas.
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- 2021
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8. Randomized controlled trial to evaluate locally sourced two-component compression bandages for HIV-associated Kaposi sarcoma leg lymphedema in western Kenya: The Kenyan Improvised Compression for Kaposi Sarcoma (KICKS) study protocol
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Aileen Y. Chang, Rakhi Karwa, Naftali Busakhala, Sara L. Fletcher, Edith C. Tonui, Paul Wasike, Michael A. Kohn, Fredrick Chite Asirwa, Samson K. Kiprono, Toby Maurer, Suzanne Goodrich, and Sonak D. Pastakia
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Medicine (General) ,R5-920 - Abstract
Background: HIV-associated Kaposi sarcoma (KS), among the most frequent cancers seen in sub-Saharan Africa, is associated with a high prevalence of lymphedema. Lymphedema causes progressive functional impairment marked by swelling, physical discomfort, disfiguring changes, skin hardening from fibrosis, poor wound healing, and recurrent skin infection. While compression therapy is considered a major component of lymphedema management, this intervention has never been evaluated in HIV-associated KS lymphedema. Methods/design: The Kenyan Improvised Compression for Kaposi Sarcoma (KICKS) study is a randomized, controlled trial. Due to variable lymphedema stage, we will use block randomization with a 1:1 allocation to assign participants to one of two groups: “Immediate compression” or “Delayed compression.” Those randomized to “Immediate compression” intervention arm will receive weekly two-component compression bandages while receiving chemotherapy, whereas those in the “Delayed compression” control arm will be followed during chemotherapy and then receive compression after chemotherapy is completed. The primary outcome is change in Lower Extremity Lymphedema Index from enrollment at Week 0 to blinded outcome assessment at Week 14 between intervention and control arms. Secondary outcomes are change in leg lymphedema-specific quality of life (LYMQOL) and change in overall health quality of life in cancer (EORTC QLQ C30). Discussion: This represents the first study in sub-Saharan Africa to assess a lymphedema-directed intervention for KS, and the intervention—locally sourced two-component compression bandages—is affordable and available. Thus, the KICKS study is an important step towards developing an evidence-based path for regionally relevant management of HIV-associated KS lymphedema. Trial registration: This trial was registered at ClinicalTrials.gov on January 19, 2018: identifier NCT03404297. Keywords: Kaposi sarcoma, Lymphedema, Compression, Unna boot, Paste bandage, Randomized controlled trial
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- 2018
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9. Development of a comprehensive and sustainable gynecologic oncology training program in western Kenya, a low resource setting
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Barry Rosen, Peter Itsura, Philip Tonui, Alan Covens, Luc van Lonkhuijzen, and Elkanah Omenge Orang'o
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Gynecology and obstetrics ,RG1-991 ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
To provide information on the development of a gynecologic oncology training program in a low-resource setting in Kenya. This is a review of a collaboration between Kenyan and North American physicians who worked together to develop a gynecologic oncology training in Kenya. We review the published data on the increase of cancer incidence in sub-Saharan Africa and outline the steps that were taken to develop this program. The incidence of cervical cancer in Kenya is very high and is the leading cause of cancer mortality in Kenya. WHO identifies cancer as a new epidemic affecting countries in sub-Saharan Africa. In Kenya, a country of 45 million, there is limited resources to diagnose and treat cancer. In 2009 in western Kenya, at Moi University there was no strategy to manage oncology in the Reproductive Health department. There was only 1 gynecologic oncologists in Kenya in 2009. A collaboration between Canadian and Kenya physicians resulted in development of a gynecologic oncology clinical program and initiation of fellowship training in Kenya. In the past 4 years, five fellows have graduated from a 2 year fellowship training program. Integration of data collection on all the patients as part of this program provided opportunities to do clinical research and to acquire peer reviewed grants. This is the first recognized fellowship training program in sub-Saharan Africa outside of South Africa. It is an example of a collaborative effort to improve women's health in a low-resource country. This is a Kenyan managed program through Moi University. These subspecialty trained doctors will also provide advice that will shape health care policy and provide sustainable expertise for women diagnosed with a gynecologic cancer.
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- 2017
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10. Development of a comprehensive and sustainable gynecologic oncology training program in western Kenya, a low resource setting.
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Rosen B, Itsura P, Tonui P, Covens A, van Lonkhuijzen L, and Orang'o EO
- Abstract
To provide information on the development of a gynecologic oncology training program in a low-resource setting in Kenya. This is a review of a collaboration between Kenyan and North American physicians who worked together to develop a gynecologic oncology training in Kenya. We review the published data on the increase of cancer incidence in sub-Saharan Africa and outline the steps that were taken to develop this program. The incidence of cervical cancer in Kenya is very high and is the leading cause of cancer mortality in Kenya. WHO identifies cancer as a new epidemic affecting countries in sub-Saharan Africa. In Kenya, a country of 45 million, there is limited resources to diagnose and treat cancer. In 2009 in western Kenya, at Moi University there was no strategy to manage oncology in the Reproductive Health department. There was only 1 gynecologic oncologists in Kenya in 2009. A collaboration between Canadian and Kenya physicians resulted in development of a gynecologic oncology clinical program and initiation of fellowship training in Kenya. In the past 4 years, five fellows have graduated from a 2 year fellowship training program. Integration of data collection on all the patients as part of this program provided opportunities to do clinical research and to acquire peer reviewed grants. This is the first recognized fellowship training program in sub-Saharan Africa outside of South Africa. It is an example of a collaborative effort to improve women's health in a low-resource country. This is a Kenyan managed program through Moi University. These subspecialty trained doctors will also provide advice that will shape health care policy and provide sustainable expertise for women diagnosed with a gynecologic cancer.
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- 2017
- Full Text
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11. Proton magnetic resonance studies of methionine enkephalin.
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Manning TJ, Tonui P, Miller A, Toporek S, and Powell D
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- Acetic Acid, Binding Sites, Cations, Divalent, Copper, Ethylenes, Ligands, Magnetic Resonance Spectroscopy methods, Thermodynamics, Enkephalin, Methionine chemistry, Protein Conformation
- Abstract
In the literature there exist two conflicting pieces of data concerning the thermodynamics of the Cu(2+)-methionine enkephalin complex. One study utilized 1H nuclear magnetic resonance (NMR) to study the solution phase Cu(2+)-enkephalin binding and reported a strong interaction over a wide pH range. Another study utilized potentiometry to measure a log beta 101 of 4.6, a value representative of a weak metal-ligand complex. In order to resolve this discrepancy a 300 MHz 1H NMR is used to study the protonation sequence of methionine enkaphalin, a bioactive peptide, and its complexation with seven diamagnetic metals (Ba2+, Ca2+, Zn2+, La2+, Mg2+, Sr2+ and Cd2+).
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- 1996
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