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result(s) for
"Shah, Kushal K."
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Assessing effectiveness of cleaning and disinfection of equipment and environmental surfaces in cystic fibrosis clinics using an ATP assay
by
Zhou, Juyan J.
,
Saiman, Lisa
,
Muhlebach, Marianne S.
in
Adenosine triphosphate
,
Bioluminescence
,
Blood pressure
2024
Infection control guidelines for cystic fibrosis (CF) stress cleaning of environmental surfaces and patientcare equipment in CF clinics. This multicenter study measured cleanliness of frequently touched surfaces in CF clinics using an ATP bioluminescence assay to assess the effectiveness of cleaning/disinfection and the impact of feedback.
Eight surfaces were tested across 19 clinics (10 pediatric, 9 adult) over 5 rounds of testing. Rounds 1 and 2 served as uncleaned baseline, and Round 3 occurring after routine cleaning. Rounds 4 and 5 were performed after feedback provided to staff and measured after cleaning. Pass rates defined as <250 relative light units were the primary outcome.
Of the 750 tests performed, 72% of surfaces passed at baseline, and 79%, 83%, and 85% of surfaces passed in Rounds 3, 4, and 5, respectively. The overall pass-rate was significantly higher in adult compared to pediatric clinics (86% vs 71%;
< 0.001). In pediatric clinics, blood pressure equipment and computer keyboards in the pulmonary function lab consistently passed, but the exam room patient/visitor chairs consistently failed in all rounds. In adult clinics blood pressure equipment, keyboards in exam rooms and exam tables passed in all rounds and no surface consistently failed.
We demonstrate the feasibility of an ATP bioluminescence assay to measure cleanliness of patient care equipment and surfaces in CF clinics. Pass rates improved after cleaning and feedback for certain surfaces. We found that surfaces are more challenging to keep clean in clinics taking care of younger patients.
Journal Article
Awareness and knowledge among paramedical staff about glaucoma surgeries and post-surgery counseling - A questionnaire based study at a tertiary eye care center in Central Rural India
by
Ahluwalia, Navjot Singh
,
Jain, B K
,
Shakya, Rakesh
in
Adult
,
Awareness
,
awareness of glaucoma
2023
Purpose:
To determine the level of awareness and knowledge about glaucoma surgery and post-surgery counseling amongst paramedical staff at a tertiary eye-care hospital.
Methods:
This observational cross-sectional study included a random sample of 94 hospital personnel: 37 general nurse midwives, 47 ophthalmic assistants, and 10 patient caretakers (PCTs). Participants were administered a questionnaire about glaucoma surgery and post-surgery counseling of patients.
Results:
The study included 41 (43.6%) females and 53 (56.4%) males. The mean age of the participants was 24.85 ± 4.54 years. All participants were aware of trabeculectomy surgery in glaucoma (100%). A total of 95.7% knew that surgery helps in controlling IOP, of whom 57 (60.6%) participants got information during their course of learning. Overall 53 (56.4%) believed that surgery is done when medication failure occurs, and 58 (61.7%) knew that surgery helps in preserving vision. A total of 63 (67.0%) participants knew to counsel patients to visit an ophthalmologist when called for and take the treatment as advised, whereas 74 (78.7%) correctly said to visit an ophthalmologist immediately if pain/diminution of vision/discharge occurs. Overall, PCTs were found to be having significantly better knowledge (P = 0.01) compared to others and they also reported ophthalmologists as the chief source of information.
Conclusion:
This study revealed that paramedical staff had an excellent awareness of trabeculectomy surgery. However, the knowledge and counseling parts of the questionnaire revealed less than satisfactory responses. So, there is a need to continuously educate paramedical staff members so that they can help in propagating information about the role of glaucoma surgery and the importance of proper follow-up.
Journal Article
Identification of FGFR4-activating mutations in human rhabdomyosarcomas that promote metastasis in xenotransplanted models
by
Kim, Su Young
,
Desai, Krupa
,
Qualman, Stephen J.
in
Animal models in research
,
Animals
,
Biomedical research
2009
Rhabdomyosarcoma (RMS) is a childhood cancer originating from skeletal muscle, and patient survival is poor in the presence of metastatic disease. Few determinants that regulate metastasis development have been identified. The receptor tyrosine kinase FGFR4 is highly expressed in RMS tissue, suggesting a role in tumorigenesis, although its functional importance has not been defined. Here, we report the identification of mutations in FGFR4 in human RMS tumors that lead to its activation and present evidence that it functions as an oncogene in RMS. Higher FGFR4 expression in RMS tumors was associated with advanced-stage cancer and poor survival, while FGFR4 knockdown in a human RMS cell line reduced tumor growth and experimental lung metastases when the cells were transplanted into mice. Moreover, 6 FGFR4 tyrosine kinase domain mutations were found among 7 of 94 (7.5%) primary human RMS tumors. The mutants K535 and E550 increased autophosphorylation, Stat3 signaling, tumor proliferation, and metastatic potential when expressed in a murine RMS cell line. These mutants also transformed NIH 3T3 cells and led to an enhanced metastatic phenotype. Finally, murine RMS cell lines expressing the K535 and E550 FGFR4 mutants were substantially more susceptible to apoptosis in the presence of a pharmacologic FGFR inhibitor than the control cell lines expressing the empty vector or wild-type FGFR4. Together, our results demonstrate that mutationally activated FGFR4 acts as an oncogene, and these are what we believe to be the first known mutations in a receptor tyrosine kinase in RMS. These findings support the potential therapeutic targeting of FGFR4 in RMS.
Journal Article
Awareness and knowledge among paramedical staff about glaucoma surgeries and post-surgery counseling - A questionnaire based study at a tertiary eye care center in Central Rural India
by
Ahluwalia, Navjot Singh
,
Jain, B K
,
Shakya, Rakesh
in
Awareness
,
Care and treatment
,
Clinical competence
2023
To determine the level of awareness and knowledge about glaucoma surgery and post-surgery counseling amongst paramedical staff at a tertiary eye-care hospital. This observational cross-sectional study included a random sample of 94 hospital personnel: 37 general nurse midwives, 47 ophthalmic assistants, and 10 patient caretakers (PCTs). Participants were administered a questionnaire about glaucoma surgery and post-surgery counseling of patients. The study included 41 (43.6) females and 53 (56.4) males. The mean age of the participants was 24.85 ± 4.54 years. All participants were aware of trabeculectomy surgery in glaucoma (100). A total of 95.7 knew that surgery helps in controlling IOP, of whom 57 (60.6) participants got information during their course of learning. Overall 53 (56.4) believed that surgery is done when medication failure occurs, and 58 (61.7) knew that surgery helps in preserving vision. A total of 63 (67.0) participants knew to counsel patients to visit an ophthalmologist when called for and take the treatment as advised, whereas 74 (78.7) correctly said to visit an ophthalmologist immediately if pain/diminution of vision/discharge occurs. Overall, PCTs were found to be having significantly better knowledge (P = 0.01) compared to others and they also reported ophthalmologists as the chief source of information. This study revealed that paramedical staff had an excellent awareness of trabeculectomy surgery. However, the knowledge and counseling parts of the questionnaire revealed less than satisfactory responses. So, there is a need to continuously educate paramedical staff members so that they can help in propagating information about the role of glaucoma surgery and the importance of proper follow-up.
Journal Article
Development of a Yoga-Based Cardiac Rehabilitation (Yoga-CaRe) Programme for Secondary Prevention of Myocardial Infarction
by
Chaturvedi, Nishi
,
Reddy, K. S.
,
Chattopadhyay, Kaushik
in
Aged
,
Cardiology
,
Cardiovascular disease
2019
Cardiac rehabilitation (CR) after myocardial infarction is highly effective. It is unavailable in public hospitals in India due to limited resources. Our objective was to develop a scalable model of CR for India based on yoga, which could also appeal to some groups with low uptake of CR (e.g., ethnic minorities, women, and older people) globally. The intervention was developed using a structured process. A literature review and consultations with yoga experts, CR experts, and postmyocardial infarction patients were conducted to systematically identify and shortlist appropriate yoga exercises and postures, breathing exercises, meditation and relaxation practices, and lifestyle changes, which were incorporated into a conventional CR framework. The draft intervention was further refined based on the feedback from an internal stakeholder group and an external panel of international experts, before being piloted with yoga instructors and patients with myocardial infarction. A four-phase yoga-based CR (Yoga-CaRe) programme was developed for delivery by a single yoga instructor with basic training. The programme consists of a total of 13 instructor-led sessions (2 individual and 11 group) over a 3-month period. Group sessions include guided practice of yoga exercises and postures, breathing exercises, and meditation and relaxation practices, and support for the lifestyle change and coping through a moderated discussion. Patients are encouraged to self-practice daily at home and continue long-term with the help of a booklet and digital video disc (DVD). Family members/carers are encouraged to join throughout. In conclusion, a novel yoga-based CR programme has been developed, which promises to provide a scalable CR solution for India and an alternative choice for CR globally. It is currently being evaluated in a large multicentre randomised controlled trial across India.
Journal Article
Synthesis, Structural Characterization, Theoretical Calculations and In Vitro Biological Activities of Organotin(IV) Complexes with O,O Donor Ligand
by
Qanungo, Kushal
,
Tahir, Muhammad Nawaz
,
Ali, Saqib
in
Chemistry
,
Chemistry and Materials Science
,
Inorganic Chemistry
2016
The present study deals with the synthesis of ligand 4-oxo-4-(thiazol-2-ylamino)butanoic acid and afterward its organotin(IV) carboxylates [Bu
3
SnL] (
1
), [Ph
3
SnL] (
2
), [Me
2
SnL
2
] (
3
), [Bu
2
SnL
2
] (
4
) and [Ph
2
SnL
2
] (
5
). These complexes were characterized by useful techniques like elemental analysis, FT-IR, NMR (
1
H,
13
C) and single crystal analysis. The ligand coordinates to tin atom via the carboxylate group. Complex
1
has also been studied by single crystal XRD analysis. It showed that tin has distorted tetrahedral geometry due to bulky butyl groups that hinder the carbonyl oxygen of the ligand interaction with the adjacent tin atom for further coordination. The HOMO–LUMO study of ligand “
HL
” and its tin complexes
3
and
5
indicated that tin complexes are thermodynamically more stable than the ligand. The synthesized complexes were screened for their biological activities like antibacterial, antifungal, antileishminial, cytotoxicity and protein kinase inhibition studies in vitro. Complexes
1
and
2
exhibited maximum antileishmanial activity that was even higher than that of standard Amphotericin B, with significant cytotoxicity and could be potential candidates for the treatment of leishmaniasis. The UV–visible spectroscopic studies revealed that ligand and its complexes bind with DNA via intercalative mode of interaction leading to hypochromism and minor bathochromic or hypsochromic shifts.
Journal Article
Spatial bandlimitedness of scattered electromagnetic fields
2015
In this tutorial paper, we consider the problem of electromagnetic scattering by a bounded two-dimensional dielectric object, and discuss certain interesting properties of the scattered field. Using the electric field integral equation, along with the techniques of Fourier theory and the properties of Bessel functions, we show analytically and numerically, that in the case of transverse electric polarization, the scattered fields are spatially bandlimited. Further, we derive an upper bound on the number of incidence angles that are useful as constraints in an inverse problem setting (determining permittivity given measurements of the scattered field). We also show that the above results are independent of the dielectric properties of the scattering object and depend only on geometry. Though these results have previously been derived in the literature using the framework of functional analysis, our approach is conceptually far easier. Implications of these results on the inverse problem are also discussed.