• Journal of Integrative Natural Science
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• v.1 no.1
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• pp.19-23
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• 2008

Morus alba has been well known for its tonic effect or preventing of hypertension, aging, or diabetes mellitus in Asian countries. To evaluate the its effect on hair growth promotion, we performed the hair regrowth experiment with leaf, branch, root and fruit extract of Morus alba on animal model of C57BL/6 mouse. The hair regrowth effect was remarkable in the mouse treated branch and root extract (with what %), however, little effect on hair regrowth appeared on the mouse treated with leaf extract. Morus alba extract displayed antibacterial effects on Bacillus subtilis, Staphylococcus aureus, Pseudomonas and Candida albicans. These results indicated that branch and root extract of Morus alba could be applicable for hair regrowth or prevention of hair loss in human.

• Parasites, Hosts and Diseases
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• v.61 no.2
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• pp.138-146
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• 2023

Toxoplasma gondii is an intracellular protozoan parasite which can infect most warm-blooded animals and humans. Among the different mouse models, C57BL/6 mice are more susceptible to T. gondii infection compared to BALB/c mice, and this increased susceptibility has been attributed to various factors, including T-cell responses. Dendritic cells (DCs) are the most prominent type of antigen-presenting cells and regulate the host immune response, including the response of T-cells. However, differences in the DC responses of these mouse strains to T. gondii infection have yet to be characterized. In this study, we cultured bone marrow-derived DCs (BMDCs) from BALB/c and C57BL/6 mice. These cells were infected with T. gondii. The activation of the BMDCs was assessed based on the expression of cell surface markers and cytokines. In the BMDCs of both mouse strains, we detected significant increases in the expression of cell surface T-cell co-stimulatory molecules (major histocompatibility complex (MHC) II, CD40, CD80, and CD86) and cytokines (tumor necrosis factor (TNF)-α, interferon (IFN)-γ, interleukin (IL)-12p40, IL-1β, and IL-10) from 3 h post-T. gondii infection. The expression of MHC II, CD40, CD80, CD86, IFN-γ, IL-12p40, and IL-1β was significantly higher in the T. gondii-infected BMDCs obtained from the C57BL/6 mice than in those from the BALB/c mice. These findings indicate that differences in the activation status of the BMDCs in the BALB/c and C57BL/6 mice may account for their differential susceptibility to T. gondii.

• YAKHAK HOEJI
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• v.40 no.3
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• pp.340-342
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• 1996

To investigate the antialopecic effect of N-4-salicylomide-2-amino-6-piperidinopyrimidine 3-oxide(SALMI) and its salt on the hair of black mouse (C57BL/6), this study was carrie d out. When salmi and its salt in ethanol solution were administered to the black mouse (C57BL/6) by route of skin, both of them promoted the growth of hair.

• Applied Microscopy
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• v.29 no.2
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• pp.137-147
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• 1999

Comparative differences between the fine structure of cultured LL/2 cell in vitro and tumor cells in vivo which were induced in the lung by inoculation of LL/2 cells to C57 BL/6 mouse via tail vein during 21 days are not observed except for cell configuration which was changed spindle shape into oval shape. At first tumor cells appeared at lymphatic nodules and around capillary in the lung. Tumor cells divided actively by mitosis, so they became tumor nodules. The pulmonary aveoli around tumor nodules were observed somewhat flattened in shape but the cells in the aveoli appeared to be in normal condition. Furthermore the normal lung cells were observed in the tumor nodules and some apoptotic tumor cells appeared in the large tumor nodules. A lot of neutropiles were observed in the aveoli and tumor nodules of C57 BL/6 mouse lung after inoculation 22 days and 31days.

• Proceedings of the Korean Society of Toxicology Conference
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• 2002.05a
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• pp.90-90
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• 2002

In order to understand the mechanism of action of TCDD, we have examine the effect of COX-inhibitors on Cyp1a1 activity. We observed the effect of COX-inhibitor on EROD activity in C57BL/6 mouse in vovo. And we also evaluated the effect of COX-inhibitors on mouse cyp1a1 promoter activity in Hepa cell.(omitted)

• Proceedings of the PSK Conference
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• 2002.10a
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• pp.292.1-292.1
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• 2002

In order to understand the mechanism of action of TCDD. we have examined the effect of COX-inhibitors on cypla1 activity. We observed the effect of COX-inhibitor on EROD activity in C57BL/6 mouse in vovo. And we also evaluated the effect of COX-inhibitors on cypla1 mRNA. mouse cyplal promoter activity and EROD activity in Hepa cell. When Aspirin were pretreated with 3MC in vivo, the EROD activity that was stimulated by 3MC was inhibited. (omitted)

• IMMUNE NETWORK
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• v.23 no.2
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• pp.15.1-15.17
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• 2023

Innate lymphoid cells (ILCs) are critical immune-response mediators. Although they largely reside in mucosal tissues, the kidney also bears substantial numbers. Nevertheless, kidney ILC biology is poorly understood. BALB/c and C57BL/6 mice are known to display type-2 and type-1 skewed immune responses, respectively, but it is unclear whether this extends to ILCs. We show here that indeed, BALB/c mice have higher total ILCs in the kidney than C57BL/6 mice. This difference was particularly pronounced for ILC2s. We then showed that three factors contributed to the higher ILC2s in the BALB/c kidney. First, BALB/c mice demonstrated higher numbers of ILC precursors in the bone marrow. Second, transcriptome analysis showed that compared to C57BL/6 kidneys, the BALB/c kidneys associated with significantly higher IL-2 responses. Quantitative RT-PCR also showed that compared to C57BL/6 kidneys, the BALB/c kidneys expressed higher levels of IL-2 and other cytokines known to promote ILC2 proliferation and/or survival (IL-7, IL-33, and thymic stromal lymphopoietin). Third, the BALB/c kidney ILC2s may be more sensitive to the environmental signals than C57BL/6 kidney ILC2s since they expressed their transcription factor GATA3 and the IL-2, IL-7, and IL-25 receptors at higher levels. Indeed, they also demonstrated greater responsiveness to IL-2 than C57BL/6 kidney ILC2s, as shown by their greater STAT5 phosphorylation levels after culture with IL-2. Thus, this study demonstrates previously unknown properties of kidney ILC2s. It also shows the impact of mouse strain background on ILC2 behavior, which should be considered when conducting research on immune diseases with experimental mouse models.

• Archives of Plastic Surgery
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• v.38 no.6
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• pp.725-732
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• 2011

Purpose: Skin grafting is one of the most commonly used methods in reconstructive plastic surgery field, but complications such as color change, contracture or hypertrophy are common problems. However, pathophysiology of the color change after skin graft is not yet determined and no animal model is established. Methods: Full thickness skin grafts were performed on the dorsum of C57BL/6 mice. Serial chronological gross inspection for color change and pigmentation were examined. Melanin pigments were traced by Fontana-Masson staining and semi-quantitative analysis was performed. In addition, immunohistochemical staining of S-100, Micropthalmia related Transcription Factor (MITF) and Melan-A antibodies were also performed to observe melanocytes and their changes. Results: After skin graft, color change and pigment spots were observed in the graft. Fontana-Masson staining showed melanin pigments in the epidermal and dermal layers in all mice. Immunohistochemistry staining to S-100, MITF, Melan-A antibodies showed melanocytes at the basal layer of epidermis and dermis. Conclusion: In conclusion, we have established an animal model for skin pigmentation after skin graft. We believe this study may be useful in understanding of the behavior of melanocytes after skin graft.

• Korean Journal of Agricultural Science
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• v.5 no.2
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• pp.77-79
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• 1978

The Present study was examined the response of mice of 5 strains to superovulation treatment. Female mice of CF#1, C57BL/6, ICR, dd and CHN strains, aged 60 days were used. Superovulation was induced by the subcutaneous injection of 5 IU PMS and followed 48 hours later by the subcutaneous injection of 5 IU HeG. All females were killed 24 hours after RCG and then ova in the oviduct were counted under a microscope. The average number of ova ovulated in CF#1, C57BL/6, ICR, dd and CHN were 21.3, 17.9, 20.7, 21.0 and 20.5, respectively.

• Korean Journal of Pharmacognosy
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• v.34 no.4 s.135
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• pp.339-343
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• 2003

We investigated the effects of Rhus verniciflua Stokes (RVS) on high fat diet- induced obesity in C57BL/6 that received ad libitum exposure to a high fat diet for 8 weeks. Male C57BL/6 mice weighing $20.1{\pm}0.95\;g$ were divided into four groups and the body weight and food intake were weighed for 8 weeks. After the administration of RVS extract, the liver, subcutaneous and retroperitoneal adipose tissue in the mice were weighed and common blood count in whole blood and biochemical parameters in plasma were measured. It was founded that body weight increase was significantly suppressed by the oral administration of RVS extract in group with high fat diet. Weight of subcutaneous adipose tissue and concentration of triglyceride in plasma from mice which were administrated RVS extract were lower than obesity control group. These results suggest that RVS extract may effect on inhibition of diet-induced obesity.