Cochlear hair cells convert sound into electrical signals that are relayed via the spiral ganglion neurons to the central auditory pathway. Hair cells are vulnerable to damage caused by excessive noise, aging, and ototoxic agents. Non-mammals can regenerate lost hair cells by mitotic regeneration and direct transdifferentiation of surrounding supporting cells. However, in mature mammals, damaged hair cells are not replaced, resulting in permanent hearing loss. Recent studies have uncovered mechanisms by which sensory organs in non-mammals and the neonatal mammalian cochlea regenerate hair cells, and outlined possible mechanisms why this ability declines rapidly with age in mammals. Here, we review similarities and differences between avian, zebrafish, and mammalian hair cell regeneration. Moreover, we discuss advances and limitations of hair cell regeneration in the mature cochlea and their potential applications to human hearing loss.

Animals ; Mice ; Colon ; Histological Techniques

Objective: To investigate the clinicopathological features, immunophenotype, molecular features and differential diagnosis of primary synovial sarcoma of the lung (PSSL). Methods: Twelve cases of PSSL were collected at Henan Provincial People's Hospital, during May 2010 and April 2021, and their clinicopathological parameters were summarized. SS18-SSX, H3K27Me3, and SOX2 were added to the original immunomarkers to evaluate their diagnostic value for PSSL. Results: The age of 12 patients when diagnosed ranged from 32 to 75 years (mean of 50 years). There were 7 males and 5 females, 2 left lung cases and 10 right lung cases. Of the 6 patients who underwent surgical resection, five cases were confined to lung tissue (T1), one case had mediastinal invasion (T3), two cases had regional lymph node metastasis (N1), and none had distal metastasis. Microscopically, 11 cases showed monophasic spindle cell type and one case showed biphasic type composed of mainly epithelial cells consisting of cuboidal to columnar cells with glandular and cribriform structures. It was difficult to make the diagnosis by using the biopsy specimens. Immunohistochemistry (IHC) showed CKpan expression in 8 of 12 cases; EMA expression in 11 of 12 case; TLE1 expression in 8 of 12 cases; S-100 protein expression in two of 12 cases; various expression of bcl-2 and vimentin in 12 cases, but no expression of SOX10 and CD34 in all the cases. The Ki-67 index was 15%-30%. The expression of SS18-SSX fusion antibody was diffusely and strongly positive in all 12 cases. SOX2 was partially or diffusely expressed in 8 of 12 cases, with strong expression in the epithelial component. H3K27Me3 was absent in 3 of 12 cases. SS18 gene translocation was confirmed by fluorescence in situ hybridization (FISH) test in all 12 samples. Six cases underwent surgery and postoperative chemotherapy, while the other six cases had chemotherapy alone. Ten patients were followed up after 9-114 months, with an average of 41 months and a median of 26 months. Five patients survived and five died of the disease within two years. Conclusions: PSSL is rare and has a broad morphological spectrum. IHC and molecular tests are needed for definitive diagnosis. Compared with current commonly used IHC markers, SS18-SSX fusion antibody has better sensitivity to PSSL, which could be used as an alternative for FISH, reverse transcription-polymerase chain reaction or next generation sequencing in the diagnosis of PSSL.
Male ; Female ; Humans ; Adult ; Middle Aged ; Aged ; Biomarkers, Tumor/analysis* ; Sarcoma, Synovial/diagnosis* ; In Situ Hybridization, Fluorescence ; Histones/genetics* ; Proto-Oncogene Proteins/metabolism* ; Oncogene Proteins, Fusion/genetics* ; Repressor Proteins/metabolism* ; Lung/pathology* ; Lung Neoplasms

OBJECTIVE: To investigate the prevalence of comorbid depression and anxiety and to evaluate the effect of psychological interventions among schistosomiasis patients in China, so as to provide insights into improvements of psychological health among schistosomiasis patients. METHODS: Publications pertaining to comorbid depression and anxiety and psychological interventions among Chinese schistosomiasis patients were retrieved in electronic databases, including CNKI, Wanfang Data, PubMed, Web of Science, and Embase. The prevalence of comorbidity, psychological interventions, and scores for the Self-Rating Depression Scale (SDS) and Self-Rating Anxiety Scale (SAS) before and after psychological interventions among Chinese schistosomiasis patients were extracted. The prevalence of comorbid depression and anxiety was investigated among Chinese schistosomiasis patients using a meta-analysis, and the effect of psychological interventions for depression and anxiety was evaluated. RESULTS: A total of 231 publications were retrieved, and 14 publications that met the inclusion and exclusion criteria were included in the final analysis, including 2 English publications and 12 Chinese publications. Meta-analysis showed that the prevalence rates of comorbid depression and anxiety were 61% [95% confidential interval (CI): (48%, 72%)] and 64% [95% CI: (42%, 81%)] among Chinese schistosomiasis patients. Both the SDS [1.45 points, 95% CI: (1.30, 1.60) points] and SAS scores [2.21 points, 95% CI: (2.05, 2.38) points] reduced among Chinese schistosomiasis patients after psychological interventions than before psychological interventions, and the SDS [-0.47 points, 95% CI: (-6.90, -0.25) points] and SAS scores [-1.30 points, 95% CI: (-1.52, -1.09) points] reduced among Chinese schistosomiasis patients in the case group than in the control group. CONCLUSIONS The comorbid anxiety and depression are common among Chinese schistosomiasis patients, and conventional psychological interventions facilitate the improvements of anxiety and depression among schistosomiasis patients.
Humans ; Depression/therapy* ; Psychosocial Intervention ; Prevalence ; Anxiety/therapy* ; Comorbidity ; Schistosomiasis/therapy*

This study aimed to investigate the effect of methyl eugenol(ME) on hypoxia/reoxygenation(H/R)-induced injury of human renal tubular epithelial HK-2 cells and its mechanism. The viability of HK-2 cells cultured with different concentrations of ME and exposed to H/R was detected by cell counting kit-8(CCK-8) assay. The effect of ME on the morphology of HK-2 cells was observed under an inverted microscope. The content of intracellular reactive oxygen species in different groups was detected after 2',7'-dichlorodihydrofluorescein diacetate(DCFH-DA) fluorescence staining. Cell apoptosis was determined by flow cytometry. Changes in mitochondrial membrane potential were monitored by JC-1 dye. The concentrations of nuclear factor erythroid 2 related factor 2(Nrf2), heme oxygenase-1(HO-1), and nicotinamide adenine dinucleotide phosphatase oxidase 4(Nox4) were measured by Western blot, followed by the assay of Nrf2 concentration changes in cytoplasm and nucleus by confocal fluorescence staining. The results showed that when the concentration of ME was 0-40 μmol·L~(-1), the activity of HK-2 cells was not affected. Compared with the model group, ME enhanced the activity of HK-2 cells and the cell morphology was normal. As revealed by further experiments, ME inhibited the release of reactive oxygen species and the decline in mitochondrial membrane potential of HK-2 cells after H/R injury, promoted Nrf2/HO-1 expression and Nrf2 translocation to the nucleus, and down-regulated the expression of Nox4, thereby significantly reducing apoptosis. This protective effect of ME could be reversed by the specific Nrf2 inhibitor ML385. These findings have preliminarily proved that ME effectively protected HK-2 cells against H/R injury, which might be related to its promotion of Nrf2/HO-1 signaling pathway and inhibition of Nox4. Such exploration on the possible mechanism of ME in the treatment of renal ischemia-reperfusion injury(IRI) and protection of organ function from the perspective of antioxidant stress has provided reference for related research on the treatment of acute kidney injury with traditional Chinese medicine.
Apoptosis ; Epithelial Cells/metabolism* ; Eugenol/pharmacology* ; Heme Oxygenase-1/metabolism* ; Humans ; Hypoxia ; NF-E2-Related Factor 2/metabolism* ; Oxidative Stress ; Reactive Oxygen Species ; Reperfusion Injury/drug therapy*

INTRODUCTION: Amputation is often associated with depression, isolation and anxiety, resulting in changes
in the functioning and quality of life of an individual. This study aimed to compare the quality of life of
amputees before and after prosthetic rehabilitation and to determine the level of satisfaction with the
services provided by the rehabilitation team.

METHODS: This was a longitudinal study conducted at the Philippine School of Prosthetics and Orthotics
from 2016 to 2017. Quality of life was measured at baseline and at the end of prosthetic rehabilitation
using the Short Form-36 version 2 Philippines (Tagalog) and compared. Patient satisfaction was determined
using the UERMMMCI Out-Patient Satisfaction Survey. Statistical analysis was done using paired t-test
and stratified analysis.

RESULTS: Twelve participants were included; majority were adult males and all were unemployed. There
were no statistically significant changes in the quality of life of amputees after prosthetic rehabilitation.
Stratification analysis revealed significant decreases in scores in bodily pain and general health scales for
females. On the other hand, males had statistically significant increases in vitality scores. Participants
were generally satisfied with the services they received.

CONCLUSION: While no significant changes were observed for overall quality of life, certain aspects may be
related to factors such as sex, comorbidities, and type of caregiver. Recommendations include further studies
to explore other factors affecting quality of life among Filipino amputees after prosthetic rehabilitation.

BACKGROUND: Road traffic injuries (RTI) are a leading cause of morbidity and mortality globally. Despite underreporting, the scarce Philippine data suggest that RTI pose a significant health problem in the country. It is imperative, therefore, to accurately quantify the burden of RTI in the Philippines.

OBJECTIVE: This study aimed to provide the first comprehensive baseline estimation of the socioeconomic burden of RTI in the Philippines for year 2014.

METHODS: The study was a mixed method study design that utilized both primary and secondary data. These data were used to construct parameters needed for the modeling estimates. Measure of socioeconomic burden estimated were (1) economic costs, (2) disability-adjusted life years (DALYs), and (3) healthy life years (HeaLY).

RESULT: Estimated deaths due to RTI in 2014 were 12,336 translating to 454,650 years life lost due to premature death. Injury episodes from RTI were estimated to be 2,798,088 in 2014 with 186,174 leading to admissions, translating to 56,224 years life lost to disability. The total DALY loss due to RTI in 2014 was estimated at 510, 874, while healthy life years lost were estimated to be 76,215,477.4. The estimated deaths and injuries for that year equaled to direct medical cost of PhP 1.213 B, productivity loss due to premature death of PhP 24.620 B, and productivity loss due to illness of PhP 685 M resulting to a total economic cost of PhP 26.519 B to the society.

CONCLUSION: The findings indicate that RTI is an important public health concern in the Philippines with substantial economic and health burden. Investing in preventive measures will likely yield significant economic and health gains for the Philippines.

OBJECTIVE: This study aimed to assess the health workforce's service capacities within a health Service Delivery Network (SDN) of an urban poor and a rural poor setting.

METHODS: This is a concurrent mixed-methods study implemented in Navotas and Masbate, an urban poor and a rural poor area, respectively. Health needs of the residents were assessed through records review, qualitative methods and a household survey. Health facilities in the identified SDN were assessed using the Service Availability and Readiness Assessment (SARA) tool. Training data of Human Resource for Health (HRH) were also obtained.

RESULTS: SDN in the two areas are different in terms of formality where memoranda of agreement were prepared between Masbate facilities but not in Navotas. Health worker to population ratios were 12.1 per 10,000 in Navotas and 2.7 in Masbate, respectively. The primary care facilities in the two sites met the recommended level of trainings for health workers in obstetric care, immunization, childhood nutrition and tuberculosis. There was a lack of post-graduate training in non-communicable diseases in all facilities. Poverty and geography were significant factors affecting health service delivery.

CONCLUSION: In terms of human resources, both sites have limited number of health workers and the ratios fall far below WHO guideline. Recommendations include: Primary health care staff complement should be increased in the two SDNs. HHRDB should conduct a study to settle the issue of continuing medical education requirements that are not congruent with WHO recommendations. The SDNs should include the access of medicines and commodities by poor patients in private facilities during times of stock outs. Also, during stock outs or unavailability of government health personnel, transportation should be made available via the SDN to transport poor patients to private or nongovernment facilities with the needed personnel. The DOH and HHRDB should investigate innovative strategies for telehealth services that do not require continuous electricity, nor telephone or cellphone signal.

The use of child restraints such as car seats or booster seats inevitability increases with the implementation of laws mandating its use in the general public. This is of great importance to child health and injury prevention as child restraint use has been shown to reduce the risk of serious injury by 71% to 82% for children less than 1-year-old, and 45% for children aged 4 to 8 years old.2,3 In terms of averting death, child restraints were associated with 28% reduction in risk for death.4 It has been found that using ageand size-appropriate child restraints is the best way to save lives and reduce injuries in a crash.5 It is reasonable, therefore, that one study that investigated the association between child restraint law implementation and traffic injury rate among 4 to 6 years old children in New York State found that these children experienced an 18% reduction in traffic injury rate. (See full-text for continuation).
Human ; Child Preschool (a Child Between The Ages Of 2 And 5) ; Pediatrics