Recent advancements in coordination compounds and their potential clinical application in the management of diseases: An up-to-date review

Coordination compounds-based drugs are crucial in targeting various diseases due to their distinct structural order. They also show a significant role in biological systems, including human beings. For example, hemoglobin, a carrier of oxygen transportation in the blood, is a metal complex of Fe (II) ions and is vital for human life. In addition, they have been utilized for treating various diseases associated with human beings due to their excellent anti-bacterial, anti-cancer, and anti-viral potential. The coordination compounds of different metal ions such as platinum (Pt), palladium (Pd), ruthenium (Ru), nickel (Ni), chromium (Cr), silver (Ag), and gold (Au) have been used as anti-cancer drugs. Moreover, the metal complex of chromium, gold, and copper ions exhibited excellent anti-bacterial activity. Additionally, many coordination compounds revealed promising applications against malaria and neurodegenerative conditions like Alzheimer's. Recently, coordination compounds have been utilized as anti-viral drugs to treat coronavirus. In the present review, we have spotlighted the advanced and most significant coordination compounds that exhibit an essential role in medicine.

Association of COVID-19 with Comorbidities: An Update.

Coronavirus disease (COVID-19) is caused by severe acute respiratory syndrome-coronavirus-2 (SARS-CoV-2) which was identified in Wuhan, China in December 2019 and jeopardized human lives. It spreads at an unprecedented rate worldwide, with serious and still-unfolding health conditions and economic ramifications. Based on the clinical investigations, the severity of COVID-19 appears to be highly variable, ranging from mild to severe infections including the death of an infected individual. To add to this, patients with comorbid conditions such as age or concomitant illnesses are significant predictors of the disease's severity and progression. SARS-CoV-2 enters inside the host cells through ACE2 (angiotensin converting enzyme2) receptor expression; therefore, comorbidities associated with higher ACE2 expression may enhance the virus entry and the severity of COVID-19 infection. It has already been recognized that age-related comorbidities such as Parkinson's disease, cancer, diabetes, and cardiovascular diseases may lead to life-threatening illnesses in COVID-19-infected patients. COVID-19 infection results in the excessive release of cytokines, called "cytokine storm", which causes the worsening of comorbid disease conditions. Different mechanisms of COVID-19 infections leading to intensive care unit (ICU) admissions or deaths have been hypothesized. This review provides insights into the relationship between various comorbidities and COVID-19 infection. We further discuss the potential pathophysiological correlation between COVID-19 disease and comorbidities with the medical interventions for comorbid patients. Toward the end, different therapeutic options have been discussed for COVID-19-infected comorbid patients.

COVID-19 impact on index testing services and programmatic cost in 5 high HIV prevalence Indian districts.

BACKGROUND: Restrictions to curb the first wave of COVID-19 in India resulted in a decline in facility-based HIV testing rates, likely contributing to increased HIV transmission and disease progression. The programmatic and economic impact of COVID-19 on index testing, a standardized contact tracing strategy, remains unknown. METHODS: Retrospective programmatic and costing data were analyzed under a US government-supported program to assess the pandemic's impact on the programmatic outcomes and cost of index testing implemented in two Indian states (Maharashtra and Andhra Pradesh). We compared index testing continuum outcomes during lockdown (April-June 2020) and post-lockdown (July-Sept 2020) relative to pre-lockdown (January-March 2020) by estimating adjusted rate ratios (aRRs) using negative binomial regression. Startup and recurrent programmatic costs were estimated across geographies using a micro-costing approach. Per unit costs were calculated for each index testing continuum outcome. RESULTS: Pre-lockdown, 2431 index clients were offered services, 3858 contacts were elicited, 3191 contacts completed HIV testing, 858 contacts tested positive, and 695 contacts initiated ART. Compared to pre-lockdown, the number of contacts elicited decreased during lockdown (aRR = 0.13; 95% CI: 0.11-0.16) and post-lockdown (aRR = 0.49; 95% CI: 0.43-0.56); and the total contacts newly diagnosed with HIV also decreased during lockdown (aRR = 0.22; 95% CI: 0.18-0.26) and post-lockdown (aRR = 0.52; 95% CI: 0.45-0.59). HIV positivity increased from 27% pre-lockdown to 40% during lockdown and decreased to 26% post-lockdown. Further, ART initiation improved from 81% pre-lockdown to 88% during lockdown and post-lockdown. The overall cost to operate index testing was $193,457 pre-lockdown and decreased during lockdown to $132,177 (32%) and $126,155 (35%) post-lockdown. Post-lockdown unit cost of case identification rose in facility sites ($372) compared to pre-lockdown ($205), however it decreased in community-based sites from pre-lockdown ($277) to post-lockdown ($166). CONCLUSIONS: There was a dramatic decline in the number of index testing clients in the wake of COVID-19 restrictions that resulted in higher unit costs to deliver services; yet, improved linkage to ART suggests that decongesting centres could improve efficiency. Training index testing staff to provide support across services including non-facility-based HIV testing mechanisms (i.e., telemedicine, HIV self-testing, community-based approaches) may help optimize resources during public health emergencies.

HIV service delivery in the time of COVID-19: focus group discussions with key populations in India.

INTRODUCTION: There are limited data on the impact of COVID-19-associated disruptions and novel HIV service delivery strategies among key populations (KPs) in low- and middle-income countries. In March 2020, in response to COVID-19, the Government of India revised HIV service delivery policies to include community antiretroviral therapy (ART) distribution and multi-month dispensing (MMD) of ART for all people living with HIV (PLHIV). METHODS: To assess the acceptability of these adaptations and impact of the pandemic among KPs, we conducted focus groups in November-December 2020 with purposively sampled men who have sex with men (MSM), female sex workers (FSWs) and transgender women (TGW) in Telangana and Maharashtra. Seven discussions were conducted. Topics included HIV service access, risk behaviours, economic security and feedback to ensure service continuity. Inductive coding identified themes across topics. RESULTS: Forty-four individuals aged 20-49 years participated in discussions (13 MSM; 16 FSW; and 15 TGW). Twenty-four participants self-identified as living with HIV. People not living with HIV reported challenges in accessing HIV antibody testing at hospitals due to travel restrictions and fear of contracting COVID-19. Participants accessed HIV antibody testing using transportation arranged by community-based organizations after lockdowns eased. PLHIV reported uninterrupted ART refills and generally consistent adherence; however, there were experiences of delayed CD4 and HIV RNA testing. Participants shared appreciation for MMD as it saved time, money, and reduced exposure to COVID-19. Participants expressed gratitude for home deliveries which enabled ART access, yet shared concerns about home-based services causing confidentiality breaches with family/neighbours. Participants voiced preferences for community-based service provision due to proximity, convenient hours, and welcoming environments compared to public hospitals. Other requests included support for income, employment, nutrient-rich food and more accessible mental health, HIV, and other health services. CONCLUSIONS: COVID-19 restrictions had a greater impact on access to HIV antibody, CD4, and RNA testing services compared to ART access. High acceptance of MMD and community-based services support the continued role of differentiated service delivery models to improve KP access to HIV antibody, CD4, RNA testing services, convenient ART retrieval, and integrated services beyond HIV, which may be critical for survival and wellbeing.

COVID-19 created chaos across the globe: Three novel quarantine epidemic models.

The latest version of human coronavirus said to be COVID-19 came out as a sudden pandemic disease within human population and in the absence of vaccination and proper treatment till date, it daunting threats heavily to human lives, infecting more than 12, 11, 214 people and death more than 67, 666 people in 208 countries across the globe as on April 06, 2020, which is highly alarming. When no treatment or vaccine is available till date and to avoid COVID-19 to be transmitted in the community, social distancing is the only way to prevent the disease, which is well taken into account in our novel epidemic models as a special compartment, that is, home isolation. Based on the transmitting behavior of COVID-19 in the human population, we develop three quarantine models of this pandemic taking into account the compartments: susceptible population, immigrant population, home isolation population, infectious population, hospital quarantine population, and recovered population. Local and global asymptotic stability is proved for all the three models. Extensive numerical simulations are performed to establish the analytical results with suitable examples. Our research reveals that home isolation and quarantine to hospitals are the two pivot force-control policies under the present situation when no treatment is available for this pandemic.