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Effect of Ciprofloxacin Administration on Gastric Histopathological Changes in Mice Lisa Savitri; Kharisul Ihsan; Rochmad Krissanjaya; Elfred Rinaldo Kasimo; Novirma Yanti; Mochamad Hanif Hilmi
Biology, Medicine, & Natural Product Chemistry Vol 14, No 2 (2025)
Publisher : Sunan Kalijaga State Islamic University & Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/biomedich.2025.142.873-878

Ciprofloxacin is a fluoroquinolone antibiotic widely used in clinical and veterinary practice. While effective against a broad range of bacterial infections, several studies have reported potential adverse effects on the gastrointestinal tract, particularly the gastric mucosa. This study aimed to evaluate the histopathological changes in the gastric mucosa of mice following ciprofloxacin administration at different doses. A total of 24 male mice were randomly divided into four groups: control, low-dose ciprofloxacin, moderate-dose ciprofloxacin, and high-dose ciprofloxacin. Treatment was administered orally for 14 days. Gastric tissues were collected and examined histologically using hematoxylin-eosin staining. Histopathological analysis revealed dose-dependent mucosal alterations. The control group showed intact gastric architecture, while the low-dose group exhibited mild epithelial erosion. The moderate-dose group presented with mucosal disruption and inflammatory infiltration, and the high-dose group demonstrated severe ulceration, edema, and mucosal thinning. These findings indicate progressive gastric injury with increasing ciprofloxacin exposure. Ciprofloxacin administration induces dose-dependent gastric mucosal injury in mice, consistent with fluoroquinolone-related gastrointestinal toxicity. Caution is warranted in prolonged or high-dose therapy, and further studies are needed to explore the underlying mechanisms and potential gastroprotective interventions.

Isolation and Identification of Dermatophytes from Toenails and Interdigital Spaces of Students Using Czapek Yeast Extract Agar Lisa Savitri; Kharisul Ihsan; Rochmad Krissanjaya; Elfred Rinaldo Kasimo; Novirma Yanti; Mochamad Hanif Hilmi
Biology, Medicine, & Natural Product Chemistry Vol 14, No 2 (2025)
Publisher : Sunan Kalijaga State Islamic University & Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/biomedich.2025.142.795-798

Dermatophytosis remains a common superficial fungal infection affecting nails and interdigital spaces, with Trichophyton rubrum and T. mentagrophytes as the predominant etiologic agents. The recent emergence of terbinafine-resistant T. indotineae has raised new challenges in diagnosis and treatment. Although Sabouraud Dextrose Agar is the conventional medium for fungal culture, alternative media such as Czapek Yeast Extract Agar (CYA) may provide additional advantages for dermatophyte isolation and morphological identification. This study aimed to isolate and identify dermatophytes from toenails and interdigital spaces of university students using CYA medium and to evaluate its applicability in dermatophyte culture. A cross-sectional descriptive study was conducted among 100 university students aged 18–24 years. Specimens were collected from toenails (n = 60) and interdigital spaces (n = 40). Direct microscopy was performed using 20% KOH preparation. Samples were cultured on CYA supplemented with chloramphenicol and cycloheximide, and incubated at 28 ± 2 °C for up to 21 days. Fungal isolates were identified based on macroscopic and microscopic morphology. Data were analyzed descriptively, and associations were tested using the chi-square test. Fungal elements were detected in 65% of samples by KOH examination, and dermatophyte growth was confirmed in 52% of cultures. The most frequently isolated species were T. rubrum (28%) and T. mentagrophytes (18%). Notably, T. indotineae was detected in 5% of samples. No significant difference was found between toenail and interdigital isolates (p = 0.26). Dermatophytes are prevalent among university students, with T. rubrum as the dominant species. The detection of T. indotineae highlights its emerging role in young populations. CYA proved effective for dermatophyte isolation and may serve as an alternative culture medium in academic and diagnostic laboratories.

Onychomycosis in Students: An Overview of Nail Care Practices and Personal Hygiene Lisa Savitri; Kharisul Ihsan; Rochmad Krissanjaya; Elfred Rinaldo Kasimo; Novirma Yanti; Mochamad Hanif Hilmi
Biology, Medicine, & Natural Product Chemistry Vol 14, No 2 (2025)
Publisher : Sunan Kalijaga State Islamic University & Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/biomedich.2025.142.1015-1019

Onychomycosis is a common nail disorder caused by dermatophytes, yeasts, and non-dermatophyte molds, with increasing prevalence among young adults. Poor nail care and personal hygiene habits are essential predisposing factors that contribute to infection. Despite its clinical relevance, data on onychomycosis in student populations remain limited. A cross-sectional study was conducted among 150 undergraduate students from the Faculty of Health Sciences, aged 18–25 years. Nail specimens were collected from individuals presenting with suspected onychomycosis. Direct microscopy was performed using a 20% potassium hydroxide (KOH) preparation, and samples were cultured on Sabouraud Dextrose Agar supplemented with chloramphenicol and cycloheximide. Fungal isolates were identified based on macroscopic and microscopic characteristics. Sociodemographic data, nail care habits, and hygiene practices were collected through structured questionnaires. Data were analyzed descriptively, and associations were assessed using chi-square tests. Onychomycosis was confirmed in 27 students (18%). Dermatophytes were the most frequent isolates, with Trichophyton rubrum (9%) and T. mentagrophytes (5%) predominating, followed by Candida albicans (3%) and Aspergillus spp. (1%). Risk factors significantly associated with infection included irregular nail trimming (p = 0.01), sharing of nail clippers (p = 0.03), and prolonged use of closed footwear (p = 0.02). No significant associations were observed with gender or age. Onychomycosis is prevalent among university students, with dermatophytes as the leading causative agents. Inadequate nail care and poor hygiene practices play a critical role in the occurrence of diseases. Health education and preventive interventions should be prioritized to reduce infection rates in young adults. Further studies employing molecular methods are recommended to refine species identification and improve epidemiological insights.

The Influence of Strain Type and Female Age on the Receptivity of Female Drosophila melanogaster in Homogamous Crosses Lisa Savitri; Kharisul Ihsan; Rochmad Krissanjaya; Elfred Rinaldo Kasimo
Biology, Medicine, & Natural Product Chemistry Vol 14, No 2 (2025)
Publisher : Sunan Kalijaga State Islamic University & Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/biomedich.2025.142.937-941

Drosophila melanogaster is a widely used model organism in genetic research due to its short life cycle and the presence of many genes homologous to those found in humans. It plays an important role in studies related to genetic inheritance, gene interaction, sex determination, and developmental genetics. One key aspect of its reproductive biology is female receptivity—the willingness of a female to accept mating—which is influenced by various internal and external factors. External factors include environmental conditions such as temperature and humidity, as well as male courtship signals like wing vibrations and chemical cues. Internal factors are mainly related to the female's sexual maturity and mating status. Generally, female receptivity increases with age after eclosion, reaches a peak, and gradually declines. This study investigates the impact of strain type and female age on receptivity in homogamous crosses of D. melanogaster, using two mutant strains: dp (with a wing mutation) and wa (with an eye color mutation). Receptivity was measured by the presence or absence of F1 offspring following crosses between males and females of the same strain, with females tested at different ages ranging from 10 to 60 hours after eclosion. The results indicate that strain type does not have a significant effect on female receptivity. In contrast, female age plays a clear role: individuals aged 30 years and older were more receptive and more likely to produce offspring. No significant interaction was found between strain type and age. These findings suggest that female receptivity in D. melanogaster is more strongly influenced by sexual maturity (as indicated by age) than by genetic differences between strains.

Academic Stress and Blood Glucose Levels: A Correlational Study Among Medical Laboratory Technology Students Lisa Savitri; Mochamad Hanif Hilmi; Elfred Rinaldo Kasimo; Rochmad Krissanjaya; Kharisul Ihsan
Biology, Medicine, & Natural Product Chemistry Vol 14, No 2 (2025)
Publisher : Sunan Kalijaga State Islamic University & Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/biomedich.2025.142.977-981

Diabetes mellitus is a chronic metabolic disorder characterized by elevated blood glucose levels, often influenced by various physiological and psychological factors. One such factor is stress, particularly academic stress among university students. This study aims to explore the potential correlation between academic stress levels and random blood glucose levels among Medical Laboratory Technology (D.IV) students at Kadiri University. A cross-sectional, quantitative approach was used in this study. A total of 28 eligible students participated. Academic stress levels were assessed using the Perceived Sources of Academic Stress (PSAS) questionnaire, while random blood glucose levels were measured using spectrophotometric methods with glucose GOD FS reagents. Data were analyzed using the Pearson correlation test to determine the relationship between the two variables. The majority of students experienced moderate academic stress (71.43%), while the rest (28.57%) experienced high stress. No students reported low stress levels. Regarding blood glucose, 53.57% of participants had normal levels, and 46.43% had elevated levels. The Pearson correlation coefficient was 0.045 with a p-value of 0.819, indicating no statistically significant relationship between academic stress levels and blood glucose levels. Regression analysis also confirmed that while there was a slight positive trend (suggesting that higher stress may slightly raise glucose levels), the effect was negligible and not statistically significant. This study found no significant correlation between academic stress and random blood glucose levels among Medical Laboratory Technology students. Although stress may contribute to changes in glucose levels through hormonal mechanisms, other factors—such as diet, physical activity, and individual coping strategies—likely play a more substantial role. Interventions focusing on stress management, healthy lifestyle habits, and regular health monitoring are recommended to maintain both psychological well-being and metabolic health in students.

Study of Sperm Utilization in Female Drosophila melanogaster of bdp and btx Strains Lisa Savitri; Kharisul Ihsan; Elfred Rinaldo Kasimo; Rochmad Krissanjaya
Biology, Medicine, & Natural Product Chemistry Vol 14, No 2 (2025)
Publisher : Sunan Kalijaga State Islamic University & Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/biomedich.2025.142.1151-1157

This study investigates the patterns of sperm utilization in female Drosophila melanogaster of the bdp and btx strains through sequential mating with multiple males. The research was conducted as a descriptive observational study without experimental manipulation. Females of each strain were crossed with four different males in a specific order, with a two-day interval between each mating. F1 offspring phenotypes were recorded daily over a six-day period following the final mating. Data were analyzed descriptively and supported by somatic chromosome reconstruction to identify the male origin of each offspring. The results indicate that sperm utilization in D. melanogaster females occurs in both random and non-random patterns. Non-random utilization was observed when offspring were produced exclusively from the first male, with no contribution from subsequent males. For example, in the female btx × male N cross, only N female and N male offspring were produced, indicating that sperm from the first male was preferentially used. In contrast, random sperm utilization was evident in later matings, where offspring from multiple males appeared, suggesting that previously stored sperm remained viable and were used alongside or instead of sperm from later matings. These findings highlight the complexity of post-mating sexual selection in D. melanogaster, particularly the role of female sperm storage and utilization mechanisms. The ability of females to either favor the sperm of a particular male or mix sperm from several males may provide evolutionary advantages in terms of genetic diversity and offspring fitness. This study contributes to a better understanding of reproductive strategies and sperm competition in insects, with potential implications for broader studies in evolutionary biology and genetics.

Laboratory Detection of Toenail Onychomycosis Using Malt Extract Agar in Students Lisa Savitri; Kharisul Ihsan; Elfred Rinaldo Kasimo
Biology, Medicine, & Natural Product Chemistry Vol 14, No 2 (2025)
Publisher : Sunan Kalijaga State Islamic University & Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/biomedich.2025.142.1325-1330

Onychomycosis is a common nail disorder caused by dermatophytes, non-dermatophyte molds, and yeasts. Despite being more prevalent in older adults, it is increasingly reported among younger populations, including university students, due to lifestyle factors and communal exposures. Rapid and accurate diagnosis is critical for effective management, but conventional methods remain limited in sensitivity. This study aimed to evaluate the prevalence and etiological profile of toenail onychomycosis among university students using potassium hydroxide (KOH) microscopy and Malt Extract Agar (MEA) culture. A total of 98 students with clinical signs of onychomycosis provided toenail specimens. Direct microscopy examination with 20% KOH was performed, followed by culture on MEA at 28–30 °C for up to 21 days. Fungal isolates were identified based on macroscopic and microscopic morphology. Statistical analysis assessed associations between clinical features and culture results. KOH microscopy detected fungal elements in 59.2% of specimens, while MEA culture yielded growth in 63.3%. When combined, the overall prevalence of confirmed onychomycosis was 71.4%. Trichophyton rubrum was the most frequent isolate (35.5% of positive cultures), followed by non-dermatophyte molds such as Aspergillus and Fusarium, and yeasts including Candida albicans and Candida parapsilosis. Nail thickening and discoloration were significantly associated with culture positivity (p < 0.05). Onychomycosis is prevalent among university students, with MEA culture providing superior diagnostic yield compared to KOH microscopy alone. The identification of non-dermatophyte molds and yeasts underscores the importance of comprehensive diagnostic strategies for guiding effective treatment. Future studies should combine culture and molecular methods to enhance detection accuracy and clarify the clinical significance of emerging pathogens.

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