Animals ; Apraxias ; congenital ; Cogan Syndrome ; diagnosis ; etiology ; Coma ; Diagnosis, Differential ; Humans ; Malaria, Cerebral ; complications ; diagnosis ; parasitology ; Male ; Middle Aged ; Plasmodium falciparum ; isolation & purification ; Tomography, X-Ray Computed

The rearrangement of the actin cytoskeleton has been shown to play a critical role in the development of transformation and malignant phenotype of cancer cells. Rho family GTPases regulate the arrangement of the actin cytoskeleton. By wound-healing assay, we have found that NIH 3T3 fibroblast cells move towards the wound- gaps by extending filopodial and lamellipdial structures at the leading edge of the moving cells. We have inactivated the function of Rho GTPases of v-Ras transformed NIH 3T3 cells by overexpressing Rho GTPase-activating (RhoGAP) domain of RhoGAP of p190. We have observed that inactivation of Rho, Rac and Cdc42 GTPases by overexpressing RHG causes inhibition of: (i) polymerization of actin to form filaments, (ii) formation of lamellipodia, filopodia and stress fibres, (iii) cell motility, (iv) cell spreading and (v) cell-to-cell adhesions. These results further strengthen the current knowledge on the role of Rho, Rac and Cdc42 GTPases in the regulation of the rearrangement of actin cytoskeleton. Our results, for the first time, demonstrate that RhoGAP domain of RhoGAP could be used to study the molecular mechanism of Ras-mediated signalling in growth, differentiation and carcinogenesis.
Animals ; Biological Assay ; Cell Line, Transformed ; Cell Movement/*physiology ; Cell Transformation, Neoplastic/*ultrastructure ; Mice ; Microfilaments/metabolism/*ultrastructure ; NIH 3T3 Cells ; Research Support, Non-U.S. Gov't ; Wound Healing ; rho GTP-Binding Proteins/genetics/*physiology

Ortner syndrome or cardiovocal syndrome is a rare condition characterized by hoarseness of voice associated with cardiovascular pathology. Compression of the left recurrent laryngeal nerve by the pulmonary artery or left atrium is usually responsible. Recurrent aspiration pneumonia may cause significant morbidity and mortality. Early recognition and treatment along with removal of the underlying cause, if possible, may change an otherwise poor prognosis of the condition. The case presented here describes a 35-year old female with hoarseness of voice in association with mitral stenosis and bronchiectasis. Presence of dual pathology contributed to the overall pathophysiology of the disease, and made its management difficult.
Bronchiectasis ; Female ; Heart Atria ; Hoarseness ; Humans ; Mitral Valve Stenosis ; Pneumonia, Aspiration ; Prognosis ; Pulmonary Artery ; Recurrent Laryngeal Nerve

The study aimed to compare and correlate serum levels of IL-6, 10, and 25-hydroxycholecalciferol in individuals with asthma with and without post-COVID condition (PCC). The study was designed to investigate the inflammatory response and serum 25-hydroxycholecalciferol status in asthmatics with and without PCC. A cross-sectional study of 252 subjects (128 asthmatics and 124 non-asthmatic subjects) was carried out. Interleukins and 25-hydroxycholecalciferol levels were estimated on ELISA. The principle findings were that IL-6 and 25-hydroxycholecalciferol levels were significantly increased (p<0.001), while IL-10 levels were non-significant in asthmatics with PCC compared to those without PCC. However, 25-hydroxycholecalciferol levels were significantly increased, but no significant change was observed in IL-6, and IL-10 levels in non-asthmatics with and without chronic PCC. A significant positive correlation (r = 0.258) was found between 25-hydroxycholecalciferol and IL-6 but a significant negative correlation (r = -0.227) with IL-10 in asthmatics with PCC. Similarly, a significant negative correlation (r = -0.285) was found between 25-hydroxycholecalciferol and IL-10 but was non-significant with IL-6 in asthmatics without PCC. The correlation of 25-hydroxycholecalciferol with IL-10 was significant (0.683), but IL-6 was non-significant in non-asthmatics with PCC. Multiple regression analysis showed that age, IL-6, gender, and PCC were significantly related in adjusted values to 25-hydroxycholecalciferol. This study sheds light on the complex liaison between 25-hydroxycholecalciferol levels and inflammatory responses in asthmatics, especially those with PCC. The findings suggest that although asthmatics with PCC maintain sufficient levels of 25-hydroxycholecalciferol, they show a substantial increase in the proinflammatory response. This suggests that PCC exacerbates the pro-inflammatory response in asthma. Moreover, the study reveals that asthmatics, whether with or without PCC, display a negative correlation between 25-hydroxycholecalciferol and the anti-inflammatory response. This emphasizes the main influence of asthma on the overall inflammatory response. These findings reveal a complex interplay between vitamin D levels and inflammatory mediators in asthmatic individuals with and without PCC.

The present study compares the in vitro effects of nanoparticles loaded pentamidine drug and conventional pentamidine on Leishmania tropica. Herein, pentamidine-loaded chitosan nanoparticles (PTN-CNPs) have been synthesized through an ionic gelation method with sodium tripolyphosphate (TPP). Next, the physical characteristics of PTN-CNPs were determined through the surface texture, zeta potential, in vitro drug release, drug loading content (DLC), and encapsulation efficacy (EE) and compared its efficacy with free pentamidine (PTN) drug against promastigotes and axenic amastigotes forms of L. tropica in vitro. The PTN-CNPs displayed a spherical shape having a size of 88 nm, an almost negative surface charge (-3.09 mV), EE for PTN entrapment of 86%, and in vitro drug release of 92% after 36 h. In vitro antileishmanial activity of PTN-CNPs and free PTN was performed against Leishmania tropica KWH23 promastigote and axenic amastigote using 3-(4, 5- dimethylthiazol-2-yl)-2, 5-diphenyletetrazolium bromide (MTT) assay. It was observed that the effect of PTN-CNPs and free PTN on both forms of the parasite was dose and time dependent. Free PTN presented low efficacy even at higher dose (40 µg/ml) with 25.6 ± 1.3 and 26.5 ±1.4 mean viability rate of the promastigotes and axenic amastigotes, respectively after 72 hrs incubation. While PTN-CNPs showed strong antileishmanial effects on both forms of parasite with 16 ± 0.4 and 19 ± 0.7 mean viability rate at the same higher concentration (40 µg/ml) after 72 hrs incubation. Half maximal inhibitory concentration (IC50) values of PTN-CNPs toward promastigotes and amastigotes were obtained as 0.1375 µg/ml and 0.1910 µg/ml, respectively. In conclusion, PTN-CNPs effectively inhibited both forms of the L. tropica; however, its effect was more salient on promastigotes. This data indicates that the PTN-CNPs act as a target drug delivery system. However, further research is needed to support its efficacy in animal and human CL.

Introduction: Sexually transmitted Infections (STIs) are major public health concerns reaching an all-time high, globally. In Malaysia data on the prevalence of STIs remains scarce which limits the understanding of STI transmission dynamics and the role of interventions in the control of STIs. The aim of this study is to determine the epidemiology characteristics of STIs mainly from Malaysian private healthcare institutions. Method: A two years (2016 and 2017) retrospective review was conducted on 160 multiplex RT-PCR STI reports from KPJ hospitals, Malaysia. Results: There were 65 (40.6 %) patients positive STIs [male: 21/65 (32.3 %); female: 44/65 (67.7 %)]. The STIs was prevalent among young adults (56/65; 86.2 %) from the central region (46/65; 70.8 %). Females had 1.7 times greater risk to develop STI (20 per 100) and two times higher chance to have multiple STIs (10 per 100) in comparison to male. The single STIs was caused mainly by U. parvum (N=17). In males, U. urealyticum (N=3) and C. trachomatis (N=3) were prevalent, while U. parvum (N=15) was prevalent in females. There were 19 dual infections of STIs which were commonly caused by U. parvum and M. hominis (N=5). There were seven STIs cases caused by three pathogens concurrently including U. urealyticum, U. parvum and C. trachomatis (N=2) and U. urealyticum, M. genitalium and C. trachomatis (N=2). Females from urban communities have higher risk in comparison to males for developing multiple STIs. Conclusion: This study provides an imperative platform for temporal trends of STIs in Malaysia which reflects the health status of certain populations that warrant immediate public health interventions.