The regulation of cell death through apoptosis is essential to a number of physiological processes. Defective apoptosis regulation is associated with many abnormalities including anomalies in organ development, altered immune response and the development of cancer. Several signalling pathways are known to regulate apoptosis including the Tumour Necrosis Factor-α (TNF-α) and Hippo signalling pathways. In this paper we review the cross-talk between the TNF-α pathway and the Hippo signalling pathway. Several molecules that tightly regulate the Hippo pathway, such as members of the Ras-association domain family member (RASSF) family proteins, interact and modulate some key proteins within the TNF-α pathway. Meanwhile, TNF-α stimulation also affects the expression and activation of core components of the Hippo pathway. This implies the crucial role of signal integration between these two major pathways in regulating apoptosis.
Diabetes mellitus (DM) is one of the major causes of death in the world. There are two types of DM—type 1 DM and type 2 DM. Type 1 DM can only be treated by insulin injection whereas type 2 DM is commonly treated using anti-hyperglycemic agents. Despite its effectiveness in controlling blood glucose level, this therapeutic approach is not able to reduce the decline in the number of functional pancreatic β cells. MST1 is a strong pro-apoptotic kinase that is expressed in pancreatic β cells. It induces β cell death and impairs insulin secretion. Recently, a potent and specific inhibitor for MST1, called XMU-MP-1, was identified and characterized. We hypothesized that treatment with XMU-MP-1 would produce beneficial effects by improving the survival and function of the pancreatic β cells. We used INS-1 cells and STZ-induced diabetic mice as in vitro and in vivo models to test the effect of XMU-MP-1 treatment. We found that XMU-MP-1 inhibited MST1/2 activity in INS-1 cells. Moreover, treatment with XMU-MP-1 produced a beneficial effect in improving glucose tolerance in the STZ-induced diabetic mouse model. Histological analysis indicated that XMU-MP-1 increased the number of pancreatic β cells and enhanced Langerhans islet area in the severe diabetic mice. Overall, this study showed that MST1 could become a promising therapeutic target for diabetes mellitus.
The aim of this study was to analyze human sperm motility, viability, and morphology before and after cryopreservation. This true laboratory experimental study had pre and post randomized one group design. The study was conducted at the Embryology, Andrology, and Genetics Laboratory, Department of Medical Biology, Faculty of Medicine, Universitas Airlangga from August to November 2017. The eighteen samples of fresh semen were collected from male volunteers who agreed and signed the informed consent of the study. Samples were analyzed their motility, viability, and morphology before and after cryopreservation. Results of this study indicated differentiation between motility before and after cryopreservation. Cryopreservation process decreased progressive motility (42.22 + 9.46%; 17.83 + 6.24%; p< 0.0001) and increased the number of immotile spermatozoa (35.44 + 10.15%; 60.11 + 12.53%; p< 0.0001). Cryopreservation also decreased human sperm viability (73.78 + 8.91%; 40.83 + 12.89%; p< 0.0001) and morphology (10.94 + 4.96%; 7.39 + 3.90%; p< 0.0001). Cryopreservation of human spermatozoa caused the decreased of motility, viability, and morphology.
Introduction: Infection of burn wound is a chronical disturbance to the skin, which is caused by Staphylococcus aureus and Pseudomonas aeruginosa, but lately many cases found that both bacteria have been resistant to the antibiotic. To overcome the infection caused by those bacteria, it is important to search for natural substance that has antibacterial activity to both bacteria. The power of natural substance is underestimated. Studies reveal that honey can be more effective for healing burns than modern medicine. The previous research revealed that amber honey and white honey were used as an alternative treatment against Pseudomonas aeruginosa Multi Resistant (PaMR) and Methicillin Resistant Staphylococcus aureus (MRSA). The aim of this study was to evaluate the antibacterial activity of amber honey and white honey on PaMR and MRSA.Methods: This research was conducted by performing antibacterial test phase, determining Minimum Inhibitory Concentration (MIC), and determining comparison value of antibacterial activity from amber honey and white honey to tetracycline.Results: The result of this research showed that both amber honey and white honey have antibacterial activity to both bacteria, by way of stronger antibacterial activity from white honey than amber honey. Amber honey and white honey have the same PaMR activity. MIC of white honey was 7.1% (to MRSA) and 12.3% (to PaMR), while MIC of amber honey was 10% (to MRSA) and 12.5% (to PaMR). The comparison value of antibacterial activity between amber honey and white honey to tetracycline for MRSA was equal to 1:1.08 x 10-4 and 1:1.62 x 10-4. The comparison value of antibacterial activity between amber honey and white honey to tetracycline for PaMR was equal to 1:5.62 x 10-6 and 1:1.03 x 10-5 .Conclusion: Amber honey and white honey have antibacterial activity against MRSA and PaMR.
Introduction: Allethrin is an active ingredient used in anti-mosquito drugs. Allethrin enters the body through inhalation, allegedly can disrupt the quality of spermatozoa by decreasing its amount, motility, viability and morphology. Many studies suggested that with sufficient intake of vitamin C and E would be able to minimize free radicals caused by allethrin. This study aims to investigate the effect of giving antioxidant vitamin C and E on spermatozoa quality of white rat (Rattus norvegicus) strain Wistar male with allethrin exposure.Methods: This research was a post-test design randomized control group design using Rattus novergicus male strains Wistar exposed to allethrin (LPB IPB veterinary stem cell). A total of 16 white rat strains Wistar male divided into 4 groups, one control group (without any treatment) and 3 treatment groups (given antioxidant vitamin C, vitamin E and both). The exposure of mosquito coils was performed 8 hours per day for 45 days and on the 46th day, spermatozoa was observed. The data were analyzed using ANOVA one way and BNT.Results: The results showed that treatment with vitamins affected the amount, motility and viability of rat spermatozoa exposed to allethrin. The mean amount of control group spermatozoa and treatment was 14,93, the mean spermatozoa motility control and treatment groups were 45,13 and the mean spermatozoa viability of control and treatment groups was 58,88. This is shown by the real difference between the control group and the treatment (p <0,05). Similarly, in the control group found morphological abnormalities.Conclusion: Exposure of mosquito coils 8 hours/day for 45 days decreased the spermatozoa quality. Overall, the admission of antioxidant vitamin C and E are able to maintain the quality of spermatozoa instead of one type of vitamin.
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